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BMW Crankcase Breather Valve Replacement
 
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Pelican Technical Article:

BMW Crankcase Breather Valve Replacement

Nick Czerula

Time:

4 hours4 hrs

Tab:

$300

Tools:

Set of sockets (hex and Torx T25), wrenches, screwdrivers,

Applicable Models:

BMW 325i Sedan (2006)
BMW 325xi Sedan/Wagon (2006)
BMW 328i Coupe/Conv (2007-13)
BMW 328i xDrive Coupe (2009-13)
BMW 328i xDrive Sedan (2009-11)
BMW 328i xDrive Wagon (2009-12)
BMW 328i/xi Sedan (2007-11)
BMW 328i/xi Wagon (2007-12)
BMW 328xi Coupe (2007-13)
BMW 330i/xi Sedan (2006)
BMW 335d/i/xi Sedan (2007-11)
BMW 335i xDrive Coupe (2009-13)
BMW 335i xDrive Sedan (2009-11)
BMW 335i/is Coupe/Conv (2007-13)
BMW 335xi Coupe (2007-13)

Parts Required:

Crankcase breather valve, crankcase breather hoses and pipes

Hot Tip:

Work with a cool engine.

Performance Gain:

Car will run well

Complementary Modification:

Change engine oil and air filter

When a crankcase breather valve begins to fail, engine drivability suffers. You may have a rough idle, hard start or a check engine light that is ON with fuel trim faults. If your engine is consuming oil or smoking, checking the crankcase vent valve is a good place to start. The crankcase breather has also been known to emit a honking or wheezing sound from the engine when failing. It is mounted to the back of intake manifold, near firewall. The crankcase vent hose that runs from the valve cover to the crankcase breather valve is the hose I find broken the most. If you are doing a repair where this hose may be moved or bumped, have a spare on hand, because it will break.

When replacing your crankcase breather valve, I suggest replacing all the vent hoses and the oil drain hose to dipstick tube. They become brittle over time from exposure to engine oil and heat. When removing, the parts are likely to fall apart in your hands. Have the parts shown below before you begin to avoid vehicle down time.

Crankcase breather parts: Pipe to valve cover (green arrow), Crankcase breather (yellow arrow), Drain hose (purple arrow), Pipe to intake manifold (blue arrow), vacuum hose to intake air pipe (red arrow).
Figure 1

Crankcase breather parts: Pipe to valve cover (green arrow), Crankcase breather (yellow arrow), Drain hose (purple arrow), Pipe to intake manifold (blue arrow), vacuum hose to intake air pipe (red arrow). Disconnect negative (-) battery cable. See our tech article on Battery Replacing for connection notes. Remove engine covers. See our tech article on Removing Engine Covers. Remove intake manifold. See our tech article on intake manifold removing.

Working at rear bottom of plenum on intake manifold, squeeze crankcase breather hose release collar and remove from intake manifold.
Figure 2

Working at rear bottom of plenum on intake manifold, squeeze crankcase breather hose release collar and remove from intake manifold. (green arrow) Since I do not reuse these parts, I take a pick or flathead screwdriver and break the retaining collar. Then pull pipe off and remove any remaining pieces of pipe from intake manifold. Alternately, you can squeeze the plastic spring collar and pull off to remove.

Next, working at rear of intake manifold, there is a junction block of connectors for the crankcase breather valve heaters.
Figure 3

Next, working at rear of intake manifold, there is a junction block of connectors for the crankcase breather valve heaters. You already disconnected two of the connectors at the junction when removing the intake manifold. Disconnect the remaining two electrical connectors. (green arrows)

Working at crankcase breather valve, remove three Torx fasteners (green arrows).
Figure 4

Working at crankcase breather valve, remove three Torx fasteners (green arrows). Then remove crankcase breather valve from intake manifold.

Working at engine oil dipstick tube, remove crankcase valve drain hose.
Figure 5

Working at engine oil dipstick tube, remove crankcase valve drain hose. Since I do not reuse these parts, I take a pick or flathead screwdriver and break the retaining collar. Then pull pipe off and remove any remaining pieces of pipe from the dipstick tube. Alternately, you can squeeze the release tabs and pull off to remove. I find it hard to fit my hand in the available area. Before installing the new crankcase breather valve, clean any oil residue from inside the intake manifold and surrounding areas. If needed, remove the throttle body to access inside the intake manifold. See our tech article on throttle body replacing. Install crankcase breather valve and tighten fasteners. Install new drain hose to bottom of crankcase breather valve. Next, install crankcase breather hose to breather valve. Then install intake connection pipe to breather valve. Listen for an audible click when you install hoses. Next install dipstick tube drain hose to dipstick tube. Reinstall intake manifold, during intake installation you will install the vacuum hose and breather hose to valve cover. When complete, double check all hose routings.

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Comments and Suggestions:
Ands Comments: Hello, is there any way to diagnose crankcase breather valve?
My engine is most likely burning oil,because it's not leaking out. Need to add 1 liter/quart every 500km/300miles.
December 1, 2016
Adrian Comments: Lately I've been having intermittent whistling and rough idling when starting during particularly cold mornings. The issue seems to go away after restarting the engine after some time of driving. I've also noticed the oil cap is difficult to remove when this is happening. Do this sound like the crankcase breather valve is the culprit? Also, I cant seem to find that part on your site for my 2011 328i. Do you carry the actual valve and all associated hoses?
November 29, 2016
  Followup from the Pelican Staff: Sounds like the crankcase breather is faulty. If it is a plastic valve cover, it is part of the cover and will have to be replaced as a unit.

Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Aca Joe Comments: I have e90 320i 2007. It idle rough, have a funny noise on take off, yellow lights comes and go away, too much airpressure and oil when you open oil cap. What could be the problem?
November 22, 2016
  Followup from the Pelican Staff: How much pressure is in the crankcase? What fault code is stored? - Nick at Pelican Parts  
SF Comments: after replacing the CCV on my e46 320i, I initially got a p0444 code, it went away after clearing it with the code reader. but 6 months later has returned saying purge control valve stuck open. I've replaced the EVAP purge valve, no fix. I also get a burning smell in the cab when at traffic lights etc, which makes me think its related to the CCV. When clearing the p0444 it automatically returns which makes me think its electrical or a large vacuum leak. Could the p0444 fault be linked to the CCV replacement I made?
November 14, 2016
  Followup from the Pelican Staff: I would check if the line to the purge valve was damaged. It may have been bumped or moved during the CCV replacement. Otherwise I don't see the relation. Unless the DME sees airflow (unwanted) and is blaming the purge. - Nick at Pelican Parts  
Danielle Comments: Hello. I own a BMW 328i that i just purchased in July of this year. I just had my oil and filter changed this morning as routine maintenance. The car was running perfectly fine prior to oil and filter change. Now it is idling hard, shakes when idle, dies while driving when coming to a quicker stop and makes a loud whistling noise like air is leaking from somewhere. Not sure what is going on, just know it was fine prior to this oil change. Any ideas how to fix?
November 2, 2016
  Followup from the Pelican Staff: I would start by finding the source of the whistling sound. Maybe an air duct is loose. - Nick at Pelican Parts  
Emmanuel Comments: Hello Nick

I have a 2007 325i, the mechanic replaced the starter motor 2 days ago and he broke the breather hose that goes on top-rear of the engine I guess when pulling the manifold out, he left the hose disconected and now my engine turns off while driving and braking o/slowing down.

Thanks
November 2, 2016
  Followup from the Pelican Staff: You will need to replace the broken hoses.

Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
jay Comments: working on 2006 330i replaced starter when installing crankcase drain hose that goes to oil dipstick tube it broke, can install this hose without removing intake manifold?
October 12, 2016
  Followup from the Pelican Staff: Yes, but it won't be easy. You will have work blind. - Nick at Pelican Parts  
Clem Comments: Can I use Wynn stop oil consumption on my bmw e90? Do these products work or will the additives damage my internal seals?
October 2, 2016
  Followup from the Pelican Staff: It will not stop a consumption issue. You will have to repair the engine part causing it. - Nick at Pelican Parts  
Clem Comments: Hi, I have a 2010 E90 320I VIN NM23889with over 200 000km.
she is using oil excessively and smokes white smoke occasionally. Suspect the CCV but cannot locate it. Also is the valve part of the tappet cover?
September 29, 2016
  Followup from the Pelican Staff: If you have a plastic valve cover, it is part of the cover. - Nick at Pelican Parts  
John Comments: have 2002 BMW 4 cyl 1.8 think N42B. had a oil leak on the LH side I found the breather hosea from the rocker cover and the dip stick broken and taped up?.Replaced both pipes. now have sump presurisation and blowing oil out the dip stick tube where it fits into the sump. engine runs fine NO smoke. Q could this be caused by a blocked breather valve under intake manifold you are talking about??
September 4, 2016
  Followup from the Pelican Staff: Yes, the crankcase could be over-pressurized. - Nick at Pelican Parts  
Jon Comments: On the breather valve drain hose to dipstick tube. How many release tabs are there? Im looking at the pictures and I can not see how pressing the tab will release it from the tube.
July 15, 2016
  Followup from the Pelican Staff: Two, squeeze the collar together and hold, pull off. - Nick at Pelican Parts  
drew Comments: Please provide links to the parts used.. for easy access
Drew
July 7, 2016
  Followup from the Pelican Staff: The parts vary depending on vehicle. Use the parts tool window on the right side of the screen. Enter your vehicle info and the parts will come up. - Nick at Pelican Parts  
Drew Comments: Kudos on these tech articles. You all do a great job!
Just a suggestion...
Up where you provide an estimated cost, Please provide a list to the parts used in these tutorial.
Have a fantastic day!
Drew
July 7, 2016
  Followup from the Pelican Staff: The parts vary depending on vehicle. Use the parts tool window on the right side of the screen. Enter your vehicle info and the parts will come up. - Nick at Pelican Parts - Nick at Pelican Parts  
Bimmer100 Comments: I have a 2007 328i coupe sulev n51 with 142,000miles. Today my car had been running fine today. I stopped at the bank, turned off my car and when I came back 10min later to start it up. My engine ran like total crap. All cylinders misfiring. Threw codes p0300,p0301,p0302,p0303,p0305,p0306. Lots of knocking and total loss of power. Some say it could be ccv, ?
Any suggestions? Seems odd it's an immediate thing.

I have an unrelated thing happen before. Had unplugged the secondary air hose vacuum pump. The hose kept failing and the dealer was telling me it may be due to carbon buildup in the air passages in the head. Seems unlikely, but I suppose possible. I two other mechanics that don't think it's the case. I unplugged the secondary air hose vacuum to prevent another failed part. The hose melted and fell apart getting sucked up into the pump and damaging it. That's another situation I would like a second opinion on. Any chance they are related?
June 17, 2016
  Followup from the Pelican Staff: With misfires on almost all cylinders, I would look for something affecting them all. Like a vacuum leak, fuel delivery or mechanical timing.

Secondary air hose failure is likely due to vibration, impact or a faulty check valve allowing exhaust gas into pump and hose. - Nick at Pelican Parts
 
Madeintyo Comments: I have a 2005 bmw 325i. 127,000 miles . I just replaced my valve cover gasket . But before I replaced white smoke was coming from my exhuast . And even after I replaced even more smoke was coming out . I checked my plugs and they were black from the top and I checked that my exhaust has musty oil. I already checked my coolant and nothing is wrong. Im not sure if it could the the CVV but I'm being to think it is because my plugs have oil and my exhaust is musty . What other symptoms would the Bmw have with a defective CVV ? Could thick white smoke from the exhuast be one of them ?

June 7, 2016
  Followup from the Pelican Staff: White smoke is likely coolant. I would pressure test the cooling system. If the system will not hold pressure and there are no external leaks the head gasket may be faulty.
- Nick at Pelican Parts
 
Fish Comments: On my 523i E60 after CCV and all the hoses replacement, there is an oil leak from the intake manifold. I see it where the intake manifold links to the cylinder head. How is possible that there is oil yet, also after ccv replacement? From where is possible that the oil comes? Is possible that comes form faulty valve steam seals and comes back in the intake? Thank you
May 24, 2016
  Followup from the Pelican Staff: More likely is is from the valve cover or oil filter stand. Not much else there. - Nick at Pelican Parts  
Dylan Comments: My 325i E90 with N52 engine has had both P0174 and P0171 lean codes On all the time. Fuel trim at idling & cruising is STFT 4% and LTFT 18% with bad fuel consumption. Engine vibrates at every start, which looks like vacuum leak. Local workshop Diagnosed and suggested Breather hose and the Oil separator leak. I did a Fogging leak pressure test but no smoke leaked out from anywhere. I didn't want to replace parts wrongly.
May 18, 2016
  Followup from the Pelican Staff: If the crankcase pressure is out of spec, I would start with the new breather and hoses. - Nick at Pelican Parts  
Junior Comments: My BMW E90 2005 has a blue/white smoke more especially when i accelerate..what could be the problem?
April 25, 2016
  Followup from the Pelican Staff: White smoke is likely coolant. I would pressure test the cooling system. If the system will not hold pressure and there are no external leaks the head gasket may be faulty.
- Nick at Pelican Parts
 
wonderful wondering woman Comments: 2006 BMW 325i Sedan E-90L6-3.OLN52roughly 150k miles...I need a starter however before I get it service can you say if it necessary to get crankcase vent and intake gasketon the work order to complete starter job or is this suggested sale? Do you have any advice/details replacing the starter? Thank you
April 2, 2016
  Followup from the Pelican Staff: I would replace the vent and hoses while you are in there.

Article for starter here:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/ENGINE-Starter_Replacement/ENGINE-Starter_Replacement.htm


Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Diego Comments: Nick I forgot to ask,if I replace the oil level sensor in my 07 335i do i have to take the car to the dealer to have the sensor reprogrammed or this sensor is a plug and play part?
Thanks a lot for your help.
March 9, 2016
  Followup from the Pelican Staff: Should be plug and play. You may have to clear fault codes. - Nick at Pelican Parts  
Diego Comments: I have a 2007 335i with 176000 miles two weeks ago the car start to displaying low oil light so i put like halb quarter and all seems to be ok buy three day later the same warning pop up again now everytime i add oil to normal lever the car do a blue smoke on start ups,i use castrol 0-40 european formula,whta do u think could be?
Thx on advance for your answer.
March 7, 2016
  Followup from the Pelican Staff: Your engine may be overfull. The oil condition sensor may be faulty. First confirm the oil level is correct. If necessary, drain and measure what is in engine. Do not trust the sensor at this point. - Nick at Pelican Parts  
andres_21 Comments: Hello, my 07 328i made a really loud high pitched noise when I drove it in the morning going to work. It has happened twice on seperate days and when I got to work I shut the engine off, turned it back on and the noise completely went away. I was wondering if that would be due to a worn or bad pcv or something else??
March 6, 2016
  Followup from the Pelican Staff: It could be. But honestly impossible to say without more info or hearing the noise myself. You could measure crankcase pressure to test the valve. - Nick at Pelican Parts  
Saif_325i Comments: I have e90 325i 2006 it's white smoked while pull full acceleration..and i've changed the valve cover gasget and new spark plugs and coils, also i cheek it in autoboss and showing misfire in slender 4 and 5 some time
February 21, 2016
  Followup from the Pelican Staff: White smoke is likely coolant. I would pressure test the cooling system. If the system will not hold pressure and there are no external leaks the head gasket may be faulty.
- Nick at Pelican Parts
 
Dumza Comments: I have a 2007 E70 4.8i X5, it only misfires on cylinders 1 and 8 when the engine is started with Air Mass Meter plugged in. If the car is started with Air Mass disconnected, and then plug the Air Mass once the engine is running, the car performs normally, if switched off and then ON again, it misfires on the above mentioned cylinders. Spark plugs and coils, Air Mass Meter, have been replaced. Leak tests have been performed and found in order. O2 sensors confirmed OK, fuel injectors also confirmed Ok. I now run with the Mass Meter disconnected, leading to high fuel consumption. Any ideas where next to look?
February 10, 2016
  Followup from the Pelican Staff: You have tested everything to be Ok except for the base engine. If spark and fuel are good, it has to be compression. I would check it on all cylinders. - Nick at Pelican Parts  
Alex Comments: Hi, Another quick one, 2010 328i, I Don't have any new oil leaks, the sensor showed 1qt low, so I added. then it showed Normal, but when I started driving it went down to almost empty. I added a little. It showed half but after 1/2 hr driving the level went up to 3/4... Should I replace the oil level sensor? Clean it? maybe previous leak damaged wiring? Thank you so much,
January 28, 2016
  Followup from the Pelican Staff: If you are sure the oil level is correct, the sensor is likely faulty. - Nick at Pelican Parts  
EC Comments: Hi! Thanks for your follow up on my comments. I will check on the air pump. But on my other question: Is my cover plastic or aluminum based on the VIN provided? Thanks
January 28, 2016
  Followup from the Pelican Staff: Looks to be plastic.- Nick at Pelican Parts  
Alex Comments: Hi, This is a 2nd question 2010 328i replased oil filter housing gasket, still Loosing oil, in just 30miles drive, the oil goes from max to low... The cap opens with ease at idle. there is oil under the intake, hoses have oil on them... is there a vaccuum pump to worry about? where should I start... I love you guys... thanks
January 25, 2016
  Followup from the Pelican Staff: Locate the lowest part of the leak, then follow the oil up until you find the clean sport, wet with fresh oil. That will be the source of your leak. - Nick at Pelican Parts  
EC Comments: Hi! I own the 2008 X5, E70 3.0si. I have a similar problem. I am having a loud whistling sound under the hood. It comes when the cold engine is turned on. When it is turned off, on restart the noise would vanish. It happens once every week or more. I was told that I have to replace the whole cover. VIN number is: 5UXFE43518L034323. Do I have to replace the whole thing? Is the cover plastic or aluminum? Thanks a lot.
January 22, 2016
  Followup from the Pelican Staff: The noise could be your secondary air pump. i would start there. Don't start replacing parts until you confirm the source of the noise. - Nick at Pelican Parts  
Alex Comments: Hi, I have a 2010 e90 328i wagon with 58k miles.. , The Valve cover gasket is fine, and no oil around valve cover gasket or eccentric gasket, very little oil seeping through CAP, But loosing oil 1qt/100miles.
A lot of oil under the intake manifold and on breather hoses... what could it be? do I need a new breather valve/cover? Please Help!
January 20, 2016
  Followup from the Pelican Staff: Could be the oil filter stand or the breather components. You will have to remove the intake and inspect the area of the leak to b e sure. - Nick at Pelican Parts  
AJ Comments: I've just replaced the Crankcase ventalation hose on an N52 in a 2006 330i. Unfortunately I can't get the heating tube that leads off the hose to seat flush with the others in the port. I can feel it engage but cant get it in lock. Any suggestions as to why?
January 16, 2016
  Followup from the Pelican Staff: Something could be in the port blocking it. If the port is clear, try adding a bit of dish soap to the O-ring to lubricate it. - Nick at Pelican Parts  
Mijo Comments: I have a 325i 06 and I am replacing the breather hoses and I forgot where the wire goes from the breather hose.
January 12, 2016
  Followup from the Pelican Staff: Under the intake plenum, near the firewall. - Nick at Pelican Parts  
René Comments: Hello, my BMW 318d from 11/2007 needs a new crankcase breather, but it looks different then the one shown above in instructions, part nr. should be 11127799224. I'll upload a picture. Do you have detailed insructions for this replacement?
January 12, 2016
  Followup from the Pelican Staff:
We don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
deman Comments: hello I have a e90 manufactured on 5/06 i am replacing the oil separator and breather hoses I know where every other breather hose goes except I'm having big trouble connecting the drain hose purple arrow where is this connection located? I know it connects from the separator but where is the other side connected too?
January 10, 2016
  Followup from the Pelican Staff: Step 5 shows it, at the engine oil dipstick tube. - Nick at Pelican Parts  
Vele Comments: Electric connector seen in figure2 caught fire. The engine now makes strange humming noises. Do I have to change the crankcase valve? Or is it something electrical? The connector is completely melted from the fire, what caused this? Also, where can I buy this electric connector?
January 9, 2016
  Followup from the Pelican Staff: Pelican Parts can get you the connector and parts. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.


I don;t know why it melted. Check the circuit and surround circuits for a short or high current draw. - Nick at Pelican Parts
 
00Siete Comments: Nick, silly question but I have to ask because I can't figure it out. How can the crankcase breather connecterlocated rear of the intake manifold be unplugged? Is there I a clip I need to push in or pull to release it?
December 6, 2015
  Followup from the Pelican Staff: it plugs into a junction. The connector has to be pulled straight out. If it will not come out, you can release the retainerusing a small flathead screwdriver.

I'd suggest getting the part from Pelican Parts as well. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Big Al Comments: oh the last 7 of the VIN are:A14 5579
December 1, 2015
  Followup from the Pelican Staff: Thx. - Nick at Pelican Parts  
Big Al Comments: Hi Nick,
N53 E90 330I UK spec does it have a CCV value or is it all in the cover, should i check the breather pipes first or replace cover? thanks
December 1, 2015
  Followup from the Pelican Staff: it is integrated into the valve cover. - Nick at Pelican Parts  
Dev Comments: Just replace my drive belt, now my car is whistling and the idle is rough. Could it be that the vacuum hose could be disconnected?
November 21, 2015
  Followup from the Pelican Staff: Yes, that or an intake duct is lose. Give the ducting and hoses a good look over. - Nick at Pelican Parts  
Chrissie Comments: Hi Nick....my mechanic mention it was oil burning that he cld smell it and the faults show im loosing oil pressure...im not loosing coolant and no lights except check engine soon light.
October 31, 2015
  Followup from the Pelican Staff: Then check for faulty rings or valve guides. - Nick at Pelican Parts  
Isac Comments: And the vehicle is a 2007 BMW 328i N51 SULEV E90
October 30, 2015
  Followup from the Pelican Staff: Ok, got it. - Nick at Pelican Parts  
Isac Comments: Have multiple random misfire and excessive valve noise not the common valve noise. Was thinking of could be ccv because I also have suction when opening the oil fil cap on top of the valve cover. But valve noise is always there. Loud and almost wants to stall at idle but higher rpm and smooths out and drives better.
October 30, 2015
  Followup from the Pelican Staff: Check engine oil level and pressure. Then I would check spark, fuel and compression on all cylinders.
- Nick at Pelican Parts
 
Jomans Comments: My crank case valve needs to be repaired/fixed. My extended warranty company declines coverage, they say it is not "an internal lubricated item."

After googling on the item, what it does and where it is situated, I beg to differ. To me it is an internal lubricated part. The dealer wants $575 + labor costs.

Appreciate any comments for anyone who knows!
October 30, 2015
  Followup from the Pelican Staff: It is an crankcase breather. Located either on the intake or in the valve cover. - Nick at Pelican Parts  
Chrissie Comments: I have a 335xi and recently I had the valve seals changed and the injectors due to it blowing white smoke on idle and when u excel then let off now it's doing the very same thing ...wondering what else it could be?
October 29, 2015
  Followup from the Pelican Staff: White smoke is likely coolant. I would pressure test the cooling system. If the system will not hold pressure and there are no external leaks the head gasket may be faulty.
- Nick at Pelican Parts
 
Isac Comments: Is there a procedure in check for a valve issue?
October 29, 2015
  Followup from the Pelican Staff: For what vehicle? What check valve? - Nick at Pelican Parts  
Isac Comments: Have multiple random misfire, rough idle, on my 07 BMW e90 328i N51. Car is consuming 1 qt in almost 2 months. Had a smog test on the system and read -44MBAR. Would this indicate a bad bad ccv?
October 28, 2015
  Followup from the Pelican Staff: That reading is wrong. The valve may be faulty. - Nick at Pelican Parts  
Ed Comments: Hi
Mine2006 E60 with N52 recently got PCV replacement and came without hose in red arrow in Fig.1.
Shouldn't there be a hose goes to green arrow in Fig.5?
Pls advise where I can find this receptaclegreen in Fig.5.
I'd rather buy a hose and connect it myself.
Car's consuming 1 liter per 600K after the PCV replacement. :
October 14, 2015
  Followup from the Pelican Staff: Your vehicle should have that hose.

I’m not the best with part numbers.

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need. - Nick at Pelican Parts
 
Willie Comments: I'm suddenly burning large plunbs of smoke and I believe it's my BMW oil Separator.Followup from the Pelican Staff: If you have a plastic valve cover, the valve is integral to the valve cover. If the valve cover is aluminum, the vent valve should be beneath the intake. If you supply the last 7 digits of your VIN I can check to see which version you have. - Casey at Pelican Parts
The last 7 numbers of my VIN are#
























Followup from the Pelican Staff: If you have a plastic valve cover, the valve is integral to the valve cover. If the valve cover is aluminum, the vent valve should be beneath the intake. If you supply the last 7 digits of your VIN I can check to see which version you have. - Casey at Pelican Parts
I'm having the same problem, I believe it's to oil separator. The last 7 of my VIN are #NK35349. Is this the plastic cover?

Is this a plastic valve cover? and is the oil separator indeed integral to the cover. Changing the cover vs. cleaning the cover should clear the same symptoms an actual separator has?
2006 N52 engine E60? 325i
October 12, 2015
  Followup from the Pelican Staff: No, you will have to replace the cover.- Nick at Pelican Parts  
danny Comments: I have a e90 and after changing he starter i hear a noise coming from around the lower part of the intake manifold. Could i be the crank case vent hose or the oher hose that it has thats causing the sound. Also check engine came on with small e vap leak
October 9, 2015
  Followup from the Pelican Staff: Probably a vacuum line left off, if you have a fault code. Check the evap purge solenoid lines. - Nick at Pelican Parts  
Raid Comments: Hi
I have bmw320i E90 2005
I have changed the valve cover to new one
but I got a whistling noise,
when you try to romove the Oil cap,there is no whistling noise?!!!

My VIN Number is :kp96718

Regards
Raid
Oman
September 14, 2015
  Followup from the Pelican Staff: Sounds like the valve cover is not installed correctly or a hose was left off. - Nick at Pelican Parts  
joe Comments: hello. I have a 2007 e91. i occasionally have a hissing sound that i know is created by a vacuum because when i slowly unscrew my oil filer cap, i can hear the noise wane.

others are saying that the entire valve cover needs to be replaced to fix this problem because they are saying that the crankcase breather vent is integrated into the cover.

how would one know which to replace ... the valve as described here, or the valvecover\vent?

i assume it's less costly\easier to replace the valve vs valvecover.
September 12, 2015
  Followup from the Pelican Staff: To confirm, you can check crankcase pressure using a manometer. Other than that you have to guess if it is good or bad. if you have a plastic valve cover, it is integrated. - Nick at Pelican Parts  
Mo Comments: I'm fixing to replace the ccv on my '01 325i. It started blowing clouds of white smoke from the back. It chirps every morning and takes a while for the noise to settle. Recently, someone cleaned the ccv, but now, it shuts off occasionally, still smokes, hesitates to accelerate and to top it off, something clicks as I brake. Oil isn't mixing with water, so I'm hopeful it's not the gasket. Any chance this all has to do with the bad ccv and if it will all settle once it is replaced? Car has 160k. Please help. TIA
July 30, 2015
  Followup from the Pelican Staff: It's worth a look. However, white smoke is likely coolant. I would pressure test the cooling system. If the system will not hold pressure and there are no external leaks the head gasket may be faulty.- Nick at Pelican Parts  
Shahid Comments: When selecting 2009 328xi I don't see the all the parts listed to for this diy?
July 26, 2015
  Followup from the Pelican Staff: If you have a plastic valve cover, most of the parts are integrated into the valve cover. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.


- Nick at Pelican Parts
 
Wtf__mate Comments: Thanks for the reply, I ended up making my own since everyone including BMW themselves were saying its not important/it doesn't do anything for the car, they stupid lol they don't know how important it really is till its gone and makes the engine wanting to jump out of the car with a big fat check engine light on made a new more permanent seal and my engine is running better than ever but thanks for the reply from what I've found its like an air baffle plate part of the blowby something like that
June 12, 2015
  Followup from the Pelican Staff: Thanks for sharing your installation process and experience. These type of comments add so much to the Pelican tech community.
- Nick at Pelican Parts
 
Wtf__mate Comments: 92 325i m50 dohc the inside of my valve cover is a plate with two screws holding it on the gasket/seal is half missing it keeps causing my icv to get clogged up with oil what is this plate called?
June 11, 2015
  Followup from the Pelican Staff: It may be part of the valve cover. I don't see it in any parts diagram. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
hanson Comments: Hi can you tell me oil and oil capacity of e91 318i 2006? Thanks again
June 9, 2015
  Followup from the Pelican Staff: We don't have that vehicle in thew US, so I don't have that info.
I opened a post in our forums. A Pelican community member may be able to answer your question.
- Nick at Pelican Parts
 
hanson Comments: Hi my e91 318i 2006 smokes abit from exhaust and oil level is dropping. What could be causing this? Car seems to be driving ok. Thanks.
June 8, 2015
  Followup from the Pelican Staff: Could be a breather valve or a worn out engine, valve seals, rings, etc. - Nick at Pelican Parts  
Dalom Comments: My 2007 bmw E90 323i is making a whistling noise,and learnt is a crankcase vent valve,mine is black plastic covered. is it separate or built in valve cover.
April 20, 2015
  Followup from the Pelican Staff: If you have a plastic valve cover, it is part of the valve cover. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
kateg Comments: I do have the plastic valve cover so the valve is obviously integral I will replace this and hopefully the fault will go away. Many thanks for your help. I would just like to say what a fantastic website you have. Well done.
April 9, 2015
  Followup from the Pelican Staff: Let us know what you find.

Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
kateg Comments: My 2006 BMW 325i E92 is rough running and making a squealing noise I have just had the plugs and a new coil pack replaced and noticed there was quite a bit of oil over the engine when I try to take the oil filler cap off there is a huge vacuum! I have been told it is the cyclone valve or crank case breather valve this engine doesn't seem to have one! or does it? Please can you give me any other advise kind regards
April 8, 2015
  Followup from the Pelican Staff: If you have a plastic valve cover, the valve is integral to the valve cover. If the valve cover is aluminum, the vent valve should be beneath the intake. If you supply the last 7 digits of your VIN I can check to see which version you have. - Casey at Pelican Parts  
Bachir Comments: I have a 2006 330xi with this style breather valve. Last year I replaced the oil filler cap and seal after noticing that there was a small oil leak from around the seal. Just yesterday I noticed that the new cap is starting to get covered in oil, creeping upwards.

Is this a sign of excess crankcase pressure? If so, is a failed CCV a likely culprit? Any suggestions on a way to test?
April 6, 2015
  Followup from the Pelican Staff: Usually the problem is vacuum, not pressure int he crankcase. You may just have seal failure on the cap. - Nick at Pelican Parts  
Aubs Comments: Hi nick wanted to find out if the ccv comes separate from the cover or complete with the cover BMW 323i E90 also please send me pic if you have will really appreciate it thanks
March 17, 2015
  Followup from the Pelican Staff: If it is a plastic cover, it is part of the cover. If it is aluminum, it is separate. - Nick at Pelican Parts  
Tim Comments: Hi Nick:
If breather fails, is there any error code? If not, how can I test if it's failed?
March 9, 2015
  Followup from the Pelican Staff: You need to measure crankcase pressure using a manometer. What year and model is your vehicle? I can see if I have the spec. - Nick at Pelican Parts  
Tim Comments: Hi Nick:
I found for e90 N52 the it is integrated into the valve cover, does it mean only valve cover is needed to be replaced? I cannot find this oil separator in ETK.
March 9, 2015
  Followup from the Pelican Staff: Yes, it is part of the valve cover. - Nick at Pelican Parts  
Raj Comments: Hi Nick, on the E90 N52 motor, i noticed that my breather is build into the valve cover. Would there still be a check valve under the intake manifold? I took off my valve cover to do the gasket and broke the breather pipe near the firewall. I just wanted to know where the pipe leads too.
January 14, 2015
  Followup from the Pelican Staff: The pipe leads to the intake manifold. - Nick at Pelican Parts  
Josh Comments: Hi Nick, I've been following the write-up you posted on replacing the valve cover gasket. I Broke the hose in the back and figured this is what I need to do. However, from where I'm at I'm pretty lost.
December 9, 2014
  Followup from the Pelican Staff: I believe you are in need of the hose indicated by the green arrow in figure one. It will have to be removed from the crankcase breather, then replace. - Nick at Pelican Parts  
Sam Comments: Thanks for the prompt reply!

Other than the breather hose on the back right of the cover, what other breather hoses should I check? Also, if the valve cover gasket wasn't seated properly would I have a more significant vacuum leak?
November 13, 2014
  Followup from the Pelican Staff: There should be another breather under the intake manifold. If the valve cover gasket wasn't seated or the valve cover was cracked, there would be oil fumes and residue, or a major oil leak. - Nick at Pelican Parts  
Sam Comments: While trying to replace my valve cover gasket on my 2008 328i coupe N51, I tried to remove the crankcase breather valve see pic on the valve cover because I thought it was removable and I needed to reach the valve cover bolt below it. I ended up twisting and snapping off the nipple that feeds into the hose. After buying a new valve cover, I installed everything; however, now it appears I have a vacuum leak somewhere as I'm getting rough idles only when in park and "service engine soon" light with a P0174 code shows up. In order to re-install the hose into the new valve cover, I had to pull the old broken nipple out of the hose so I can; But in doing so, I had to tear at the edges a bit. However, I made sure the hose was fully/securely on the valve when installing to the new valve cover. I don't see how the damaged edge of the hose could cause a vacuum leak as the valve nipple is about half-inch/one-inch long and I made sure the nipple went into the hose as far as possible. Could this be the cause of my idling problems and fault codes? Thanks!
November 13, 2014
  Followup from the Pelican Staff: It might not be that hose. I would check if the breather hoses are cracked. That seems more likely. - Nick at Pelican Parts  
john Comments: Nick my timing was out by a bit when I checked was wondering if that could have possibly done some damage to something and is contributing to this problem. by that I mean hurt valve in some way. or could ventilation valve cause a problem like this? thanks.
November 10, 2014
  Followup from the Pelican Staff: It can. I would compression on all cylinders to be sure there is no engine damage.
- Nick at Pelican Parts
 
john Comments: My e90 is stumbling badly at idle and at any stop points on the road. changed crank sensors and checked cam timing. when I accelerate car is driving smoothly. help.
November 10, 2014
  Followup from the Pelican Staff: You may have a vacuum leak or misfire that doesn't feel present at higher RPMs. Have you checked for fault codes? - Nick at Pelican Parts  
bowser Comments: Hi, my 06'330i just got the starter replaced and all of a sudden started showing a complete transmission malfunction... any help thanks
November 2, 2014
  Followup from the Pelican Staff: I would say this issue is unrelated, unless of course something was left unplugged. First check the transmission fluid level to be sure it is correct. Then check the transmission ECM for fault codes. If the system is not working properly, a fault code will be set. This will be your best bet when diagnosing.
- Nick at Pelican Parts
 
Muzishn1 Comments: My mechanic just replaced my alternator and within a day it started driving badly. I took it back and now he's saying my crankshaft valve needs to be replaced and is wanting $950 to do it. Are they unrelated and is $950 fair to replace this?
October 20, 2014
  Followup from the Pelican Staff: I don't see how the two could be related. I can't comment on the cost. You can call other local shops for an estimate to see if the price seems right. - Nick at Pelican Parts  
frankengun Comments: Hey guys... I am having problems with the CVV in my 2008 328i. Can you dudes please let me know if this part here http://www.ecstuning.com/BMW-E90-330i-N52_3.0L/ES24/ES25772/

is the one that I need? I cannot for the life of me find a link directly to the valve itself for my car.
October 9, 2014
  Followup from the Pelican Staff: Your vehicle may not use that style valve, depending on the valve cover type. Give our parts specialists a call at 1-888-280-7799 and they can help figure out which part or repair kit you need.
- Nick at Pelican Parts
 
Mikeyz Comments: I have a 2007 328i sedan. Last week while driving for aprox 30 mins city and coming to a stop the idle went way down and the engine started to run really rough then died. It started right up but continued to make a weird high pitched noise almost like a belt going bad. As I started to accelerate I heard the same sound as described above. I have heard that besides the crankcase breather it could possibly be an ignition coil going bad. What do you think?
August 29, 2014
  Followup from the Pelican Staff: Could be a crankcase breather valve or an engine misfire. Is the check engine light on? I would check spark, fuel and compression on all cylinders.
- Nick at Pelican Parts
 
Curtis Comments: I have a 2009 e93 with idle issues and a loud whining noise. I have replaced the vanos solenoids and the noise remains. There is high vacuum when I open the oil inlet and the noise goes away. This leads me to think that it is the ccv. Does that logic make sense? More importantly do you sell the ccv for a 2009 e93 as I do not see it in the parts catalogue? Thanks!
August 4, 2014
  Followup from the Pelican Staff: This could be the CCV,. To be sure, you will have to test crankcase vacuum using a manometer. Your vehicle may have the crankcase breathers integrated in the valve cover. - Nick at Pelican Parts  
john Comments: Hi, my car bmw e90 engine hard to start make long crank usually after the car sitting for 30minutes when I start the car engine its make lonv crank and hard to start.I have change so far:
Crankshaft sensor, starter motor, 2oxgen sensor bank1, fuel filter .
But the car still very hard to start and when I scan with obd2 scanner reading code P1128 ? Engine light coming ON.
When the car start , its drive normal no problem.
Can you help me why my car very hard to start.
Thank you
June 25, 2014
  Followup from the Pelican Staff: Could be a fuel delivery problem. I would perform a fuel delivery system test. Check fuel pressure, volume and quality.
- Nick at Pelican Parts
 
ballisticeagle Comments: working on a E90 2008 328i getting valve cover leaks. 2 gaskets that appear to have been ripped maybe sucked in? due to high vaccum . the idle is rough intermittent codes say lean banks. it has the oil seperator built into the valve cover. how can I check to see if then system is not clogged? I have the cover off the car
June 15, 2014
  Followup from the Pelican Staff: You will need to test crankcase pressure using a manometer. If it is clogged, it will show up there. - Nick at Pelican Parts  
LG Comments: Thanks for the advice!
May 12, 2014
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
LG Comments: Thanks for the replies, but when you test it on the car, do you check that you have not enough/too much vacuum on the connection of the breather tube on to the valve cover? Are there any vacuum specs?
May 12, 2014
  Followup from the Pelican Staff: You are monitoring vacuum in the crankcase, when testing. - Nick at Pelican Parts  
LG Comments: Can you give any further details on the settings to test the actual crankcase breather valve, if they are available? Mine is integral to the valve cover and is quite expensive to exchange without being certain that it needs to be.
May 12, 2014
  Followup from the Pelican Staff: You need a tool called a manometer. It measures crankcase vacuum. Depending on the engine (E90 models) it should be anywhere from 24 - 32 Mbar.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
LG Comments: Just to clarify, I am actually talking about the wired tube connector that is fixed on the bottom of the intake manifold. What does it do? Temperature measurement?
May 12, 2014
  Followup from the Pelican Staff: Not sure what tube you are referring to. - Nick at Pelican Parts  
LG Comments: Can you explain how the crankcase breather valve operates. I have had mine out and I can only see a piece of seems to be copper tube with a rectangular cut out at the end to allow for flow, but I can't deduce how it actually works. Is there any way of checking it's function outside of the car?
May 9, 2014
  Followup from the Pelican Staff: I only know how to test them on the engine with a manometer. The valve is designed to remove vapors from the crankcase while separating and return the engine oil to the crankcase. Some valve use vacuum to open or close depending on pressure. - Nick at Pelican Parts  
Duane Comments: I replaced the crankcase breather hose to the valve cover on my 2006 325ix. Can I access the hose heater connection without removing the intake manifold?
April 23, 2014
  Followup from the Pelican Staff: I bet it can be done, Would be a tight fit. You may want to remove the manifold to be sure all the connections are correctly made. - Nick at Pelican Parts  
Han Comments: The 328I with a plastic valve cover doesn't have this system.
April 7, 2014
  Followup from the Pelican Staff: Correct. The valves are built into the valve cover on this models. - Nick at Pelican Parts  
Fairfield Imports Pensacola FL Comments: This is only for the silver cover top engines the black top on the 328i has a vent valve on the valve cover similar to the 745/750 but you cant replace it. Nobody makes a replacement yet. This valve assembly and hoses need to be replaced at around 80k miles.
November 3, 2013
  Followup from the Pelican Staff: Correct, Plastic valve covers have the breather valves integrated, as with a lot of late BMW and MINI models. Some engines like the N62, the valve is available. However on others it is not. if it is not, you will have to replace the entire valve cover.- Nick at Pelican Parts  

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