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911 Spark Plug Replacement
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Pelican Technical Article:

911 Spark Plug Replacement

Bob Tindel


1 hour1 hr






Spark plug socket, torque wrench, flathead screwdriver

Applicable Models:

Porsche 911 (1965-89)
Porsche 912 (1965-69)
Porsche 930 Turbo (1976-89)

Parts Required:

Spark plugs, plug wires, cap, rotor, points

Performance Gain:

Your 911 engine will run more smoothly and have more power

Complementary Modification:

Replace your air filter

This procedure is for the 911SC, but the other 911s are similar.

If your engine has a hard-to-correct miss, it may need a new set of spark plug wires. In some cases, when the wires are bad, you can get quite a light show when you open the engine lid at night. With the engine running, you may see sparks jumping from the spark plug cables. Another indicator of bad wires is if you get a little shock when you touch the plug wires with the engine running (be careful of the fan and AC belts).

It is a good practice to replace the distributor cap and rotor along with the wires. These two parts aren't expensive, and replacement of them will ensure strong ignition. You can assemble the plug wires to the new distributor cap before installation. That makes it easier to observe how the old wires are routed around each other into the distributor cap, and how the braided ground straps are routed around the wires. When assembling the wires to the cap, apply a thin coat of dielectic grease on the end of each wire, around the outside of each nipple on the distributor cap and coil, and inside the end of each spark plug connector. This will ensure good electrical contact, and help with disassembly in the future if it is necessary. Be sure to orient the new distributor cap the same as the old one, and to insert the plug wires in the cap in the correct firing order.

This is also a good time to replace the spark plugs if needed. Do not use any anti-seize or lubricant on the spark plug threads- it can cause a plug to back out.

After you assemble the new wires to the new cap, remove the two air hoses (one plastic and one paper/wire) on the driver's side of the engine. Then unfasten the two hose clamps along the top of the engine cooling shroud, and the clamp that holds the paper/wire hose onto the heater blower at the driver's side of the engine. Move this hose (the one that goes across the top of the engine to the passenger side) out of the way to allow better access to the plug wires. Unsnap the old distributor cap, and remove it along with the old wires, by carefully pulling them out from below the intake runners. When removing the old wires from the spark plugs, it may help to rotate the plug connector first to break its seal with the spark plug, and then pull off the connector.

Install the new rotor, seating it firmly and in the same orientation as the old one. Install the new cap, making sure that it is seated in the notch on the distributor body. Route the wires in the same path as the old ones, and attach the ground straps as before. Carefully insert the spark plug connectors, observing the firing order of the engine (Pelican Parts plug wires have the plug number stamped on each wire, to make installation easier). You should feel each connector snap into place onto the end of the spark plug. Reinstall the air hoses, and you are ready for a test drive!

Bob at Pelican Parts

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Comments and Suggestions:
Ariana930 Comments: I have an 86 930 that was parked for over 5 years. Drained the gas, replaced the fuel filter, drained gas lines, drained oil and replaced. Tried to hand turn engine but was difficult. Now planning on removing spark plugs and lubing with Marvel mystery.. any other suggestions. Also do you guys sell the spark plug tool?
September 18, 2016
  Followup from the Pelican Staff: COuld be a faulty fuel pump.

When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume, quality and engine compression. Once you figure out what is missing, it will be easier to diagnose. - Nick at Pelican Parts
Marcel Comments: 1974 911s
August 17, 2016
  Followup from the Pelican Staff: got it, thanks. - Nick at Pelican Parts  
Marcel Comments: What gap should I use on the spark plugs
August 17, 2016
  Followup from the Pelican Staff: I believe it is 0.55mm - Nick at Pelican Parts  
Bob Comments: We want to know the spark plug gap for Porsche 911 so we can fix it. Thanks.
July 12, 2016
  Followup from the Pelican Staff: What year model and engine? I can see if I have that info. - Nick at Pelican Parts  
Mark Comments: I have a 1972 911T, how do I get a socket into remove the spark plugs after I have pulled the wires out. It doesn't seem there is enough room. Is there a thread or link to a video which actually shows it.
December 23, 2015
  Followup from the Pelican Staff: I have no links to share, try google. Use a short spark plug socket. - Nick at Pelican Parts  
stevedollar Comments: I just finished replacing the plugs on my 1987 Carrera 3.2. It was a bit daunting, but I dove in, took my time and finished the job with only a few bruises. The key is to remove the heater blower tube from the driver's side one little bolt and loosening a hose clamp and then removing the air box cover and air filter from the passenger side leave the other half, bolted to the intake, in place. Buy a 13/16 spark plug socket with the rubber insert to grip the plug, since you don't want to drop it into the engine. Connect the socket to a swivel connector, and connect that to a short 3" extension. Use electrical tape to tape each piece to the next, so they don't come apart when you extract the plug. You can wiggle in a full size rachet wrench one the extends is nice for extra leverage - you will need it to break loose those tight plugs. Once you have it loose, switch from the rachet wrench to a hand rachet mine is star shaped, but some are disk shaped to unscrew it the rest of the way. Carefully gingerly pull out the plug and socket assembly once you have it unscrewed. To install the plugs, start with the hand rachet, and switch to the full size wrench for the final tightening. Be careful to insert at the correct angle, as there are some other holes in there that I tried to screw the plug into #4 I think. At one point I used my telescoping little mirror to visualize the correct plug hole.
October 7, 2015
  Followup from the Pelican Staff: Thanks for the additional info and feedback. We appreciate it.
- Nick at Pelican Parts
79 SC Comments: can I use a pry tool gently under the head to get some leverage? my arm strength isn't enough!
August 16, 2015
  Followup from the Pelican Staff: You may break something on the engine or tear a wire. - Nick at Pelican Parts  
1979 SC Comments: I am trying to replace my plugs and cant even pull the wire housing off the top of the plug. I am holding it at the head and using all my strength to squeeze it straight off, sometimes twisting a little to help. The sucker won't budge despite ten minutes of pulling between rests. Any advice? 1979 SC
August 15, 2015
  Followup from the Pelican Staff: Try twisting as you pull. The wires are likely bonded to being on the plugs for a long time. - Nick at Pelican Parts  
Mith Comments: I'm replacing the sparkplug wires on my 78 911sc I bought the Magnecore cable set. Will these wires work without grounding straps on them or do I need to return them and get a different pair?
July 5, 2015
  Followup from the Pelican Staff: I would reach out to magnecore. I don't have experience with the wires and don;t have a precise answer for you. - Nick at Pelican Parts  
Havolas Comments: Does a 1977 Porsche 911S have a fuel pressure regulator? Is it mechanical or electrical? Does Pelican carry the part? Part number? Thanks!
May 22, 2015
  Followup from the Pelican Staff: If your car still has the original fuel injection system, it does not have a fuel pressure regulator. In that system the fuel pressures are controlled by the warm up regulator, which is an electrical unit connected to the fuel system. In the book 101 Projects for your Porsche 911, you can see how the system works and what common issues occur. We show that the warm up regulator is no longer available new, but you may be able to find a rebuilder, or a good used one for sale. - Casey at Pelican Parts  
Havolas Comments: I am having issues losing power for a second while driving my 1977 911S. It also died for the first time after idling for a few seconds from a cold start. I replaced the coil with an Accel Universal SuperStock Coil to no effect it still hesitates periodically while driving. Is this an okay coil to put on my car? I don't know what a CD box is, and I saw somewhere not to use a conventional coil. Confused. Thank you for your help!
May 22, 2015
  Followup from the Pelican Staff: The CD Box is a voltage amplifier used in the ignition system. I am not familiar with the ACCEL brand coil. The ignition coil you choose needs to be rated for 40,000 volts or more. http://www.pelicanparts.com/catalog/SuperCat/0787/POR_0787_ELIGNT_pg3.htm
Take a look here and purchase one of these if you think you have a bad coil. If not rated for 40,000 volts that coil may burn out your CD Box! Remember to check the basics first, spark plugs, distributor cap, points, fuel filter, fuel pump relay, etc.
Check out these articles for more information:

I would also recommend picking up a copy of 101 Projects for your Porsche 911, in that book you will find the answers to many questions that you will have once you work on your 911.
http://www.pelicanparts.com/catalog/SuperCat/0787/POR_0787_ELIGNT_pg3.htm =0&FILTER_997M=ON&FILTER_911E=ON&FILTER_911M=ON&FILTER_911L=ON

The book is only $22, and it WILL PAY FOR ITSELF during your first do it yourself project!!

- Casey at Pelican Parts
Havolas Comments: 1977 Porsche 911S. Can I remove and replace all the spark plugs from the top of the engine compartment or do I need to get under the car for any of them? Also, will a standard 13/16" spark plug socket work? And do you know the required gap for my plugs? This will be my first time attempting this :nervous: Thanks!
May 21, 2015
  Followup from the Pelican Staff: You can do the job from the top, and the new plugs should be pre gapped when you buy them. A personal recommendation I have is the NGK BR7EIX, these have been known to clear up some running issues on cars I have worked on in the past. You will definitely need a 13/16" Spark plug wrench. - Casey at Pelican Parts  
Yags Comments: Thanks Casey and Bob K. I appreciate the assistance. I'm well on my way.. Maybe. I've got a plug out and that's a start. Like you said, i heard a faint sound like a ringing in the ears on the left side when the key was turned as well. I'll get the proper socket wrench and see what I can do.
May 19, 2015
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it.
- Nick at Pelican Parts
Yags Comments: Thanks Casey. Is there a detailed parts diagram that would show where the CD box and other easy for you foreign for me parts are to find in the car? Not sure what the "whine" sound you mention sounds like. Some of the advice appears for more experienced ppl. I'd need a diagram or even find the parts. The 1987 link on your site takes me to the Porsche.com site. I assume I have to unscrew the two screws on the spark plugs housing to get to them and take one out? Thanks
May 18, 2015
  Followup from the Pelican Staff: I can guide you to where the CD box is. There should be a plastic cover on the left side of the engine compartment. You see the box to the right of the plastic cover? That is the CD box, the only thing I can add about the whine is it is a VERY high pitch whine. If you put your ear next to the box with the ignition key turned on you should hear a very high pitch whine. As for the spark plugs, they're actually not in there. That is the distributor cap, which would also be a good idea to replace if you have any question about it's age. To access the spark plugs you will need to follow each of the wires that comes out of the top of the distributor cap. Pull each connector out of the engine, the piece that those boots connect to are the spark plugs. You will need a 3-5 inch extension, and 13/16 spark plug socket that holds on to the spark plug to get them out of the holes they're mounted in. The most important thing is patience. Give yourself plenty of time to do this job. As you remove each plug, pay close attention to the angle in which the spark plugs come out of the holes, when you go to put the new plugs in you will need to put them in at the same angle to make the process easier. Plan on giving yourself about 5-8 hours to do this spark plug replacement just so you don't feel rushed. I am here if you have any other questions. The best thing for you would be to pick up this book: http://www.pelicanparts.com/catalog/shopcart/BOOK/POR_BOOK_bkptec_pg3.htm
Read the sections that interest you. It contains step by step instructions to just about anything you'd ever want to do on your car along with pictures to help you identify the parts of your car. - Casey at Pelican Parts
Yags Comments: Hi Guys,
I just had the DME relay changed on my '87 Carerrera BC it wasn't starting. A week later and it's not starting again. Trying to trouble shoot myself but I'm a 0/10 mechanically but easy to teach. It's turning over strong but no boom. How do I check the plugs or take them off? I can look for spark and guess it's a fuel issue or find gas and it's a spark issue? Pls advise. My manual doesn't show detailed pets in engine on a diagram.
May 18, 2015
  Followup from the Pelican Staff: http://www.pelicanparts.com/techarticles/mult_ignition_trouble_list/mult_ignition_trouble_list.htm

This should get you through a little bit of the process.

Pay close attention to the section about checking the CD Box, listening for the whine is a quick easy step, and can cause your issue.

Get yourself a fuel pressure gauge, and a spark checker.

- Casey at Pelican Parts
warnerjones Comments: I need to know if anyone has an idea where a plug wrench can be gotten to change just plugs for my 79 sc euro 911.
Also is there a way to get to them without pulling tons of pieces off.
I have had them 2yrs on the shelf. a porsch guy wants $130,00 to do the job.
April 19, 2015
  Followup from the Pelican Staff: 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
hairston Comments: ..have a 1980 porsche 911 one of the spark plugs will turn but will not come out.What can I do.
January 4, 2015
  Followup from the Pelican Staff: You can try pulling on it as you rotate it if. If all else fails, you will have to remove the head to get it out. - Nick at Pelican Parts  
gtrp Comments: Hello,

This article is misleading and really just talks about everything else except what you actually need to change the spark plugs.... Tools, sizes, gap, etc... It's been 6 years, can we have someone fix this to help out the community?
January 4, 2015
  Followup from the Pelican Staff: I get your comments to the right people and hopefully the article will be updated. - Nick at Pelican Parts  
Unwilling Porsche Bride Comments: On an 89 Carrera Targa, is it OK to drape the new 4-5-6 spark plug wires over the A/C compressor upon replacement, instead of going under the compressor? I could not get the wires under the compressor, because the original Beru wires were bolted under there to the engine and I could not remove the hex bolt. I had to manually tear apart the plastic bracket, and cut the old wires, just to remove them completely. This didn't leave me enough space under the A/C compressor to thread the new ones down and through. See pic. Is this OK? My wife says the wires will "burn up" there.
December 27, 2014
  Followup from the Pelican Staff: You will want to route the new wires just as the old ones were. If needed, remove the a/c compressor to fit them. - Nick at Pelican Parts  
Unwilling Porsche Bride Comments: You should mention that if you are doing this job for the first time on a 1989 or older 911, the spark plug wires are bolted onto the engine and it takes nearly an act of God to get them off! I inherited my dad's 911 and discovered to my dismay he had never replaced the wires in 25 years. You need some kind of miniature 8mm swivel socket or something to get these bolts off. I'm sure the Porsche stealership has just the right tool...
December 27, 2014
  Followup from the Pelican Staff: There are many 8mmm universal sockets available to help with this task. - Nick at Pelican Parts  
benhere Comments: Are there any issues running platinum plugs in a stock '89 911 3.2? I've been running platinum's in my '65 356 for a few years and very satisfied.
November 17, 2014
  Followup from the Pelican Staff: Should be Ok as long as the resistance is the same. - Nick at Pelican Parts  
fhbcab Comments: can you tel me the difference between a resistance vs a non resistance plug. which would I need for my 83 911 cab?? have always used Bosch w5's.does this relate to radio electrical interference? does it effect performance?
November 10, 2014
  Followup from the Pelican Staff: A resistor plug is used in computer controls cars to suppress noise. - Nick at Pelican Parts  
SRS Comments: On a "69 911, do you need to remove anything to get to the spark plugs? Looks like a long extension with a universal joint is the way to attack the issue.
November 7, 2014
  Followup from the Pelican Staff: I think, just the spark plug wires. Been a while, but I don;t recall anything being in the way.- Nick at Pelican Parts  
intruder Comments: I have gotten a great deal of information from pelican parts and have come to rely on the threads to make repairs to my 1985 Carrera. my alternator light has started to flicker I figure after reading your advice that I need to replace the voltage regulator, so while doing that i guess I'll replace the alternator as well. I have the tools and experience but for security sake I'm going to relegate it to my mechanic. Any idea how many hours it's supposed to take
for a mechanic to make the exchange? Thanks in advance, you have a great site
August 25, 2014
  Followup from the Pelican Staff: It will likely take them half a day. - Nick at Pelican Parts  
Kamalea Comments: couple of spark plugs on my 86, 930 are seized and won't. turn.
since the engine is in the car, I am afraid I might damage or break the plug if I applied much force.
is it OK to spray a lubricant to help release them.
Much appreciated.
July 10, 2014
  Followup from the Pelican Staff: Sure, penetrating oil is OK to use. Just try to clean it all up before running the engine again. - Nick at Pelican Parts  
Wally Comments: I have a 2007 Carrera Cab, I bought the spark plugs and air and cabin filters from Pelican. Should I also change the wires and distributor cap and rotor at the same time? How do I get to the plugs and where is the cabin filter?
June 27, 2014
  Followup from the Pelican Staff: Your cars doesn't have a cap, rotor or ignition wires. It is coil over plug. You will have to remove heat shields on the cylinder heads to access the plugs. The cabin filter is located the right front of the cowl. - Nick at Pelican Parts  
Shorty Comments: I have a 1988 3.2 Carrera with a miss. I have replaced the wires some time ago and tried to replace the plugs without any change. I have run the engine taking off the No 6 wire without any change but putting a plug on it it sparks fine what could be my next steps?
June 14, 2014
  Followup from the Pelican Staff: Check fuel to the cylinder, then compression. - Nick at Pelican Parts  
KG Comments: I have a 1988 911 Cab Carrera it has a miss with No 6 not firing as I can take the lead off with out any change. I took the lead off with the spark plug attached and it is sparking fine. Are there any other checks I can do to recify the problem?
June 14, 2014
  Followup from the Pelican Staff: Check fuel to the cylinder, then compression. - Nick at Pelican Parts  
Bronky Comments: How do I find the spark plugs on a 1997 911 993 Do I have to take the right rear tire off to remove the plugs?
Thanks for your help, Love Pelican Parts!
December 10, 2013
  Followup from the Pelican Staff: You have to lift the vehicle, remove the engine splash shields, then remove the heat exchangers. At that point you will have access to the spark plugs. - Nick at Pelican Parts  
astarrh Comments: Is there a special socket for spark plug removal.Is there a
special socket for plugs?
October 26, 2013
  Followup from the Pelican Staff: Not sure what vehicle you have, but a standard spark plug socket should work. - Nick at Pelican Parts  
Tidybuoy Comments: How bout including spark plug gap. And leave out all the other things that are not spark plugs - or rename the tech tip.
September 26, 2013
  Followup from the Pelican Staff: Not sure what year you have. But a 1979 is o.031 in (0.80 mm) - Nick at Pelican Parts  
Gambit951 Comments: 1983 911SC Targa .. no problem changing plugs 1 - 5.
#6 cylinder however, i can't seem to get anything in there.
looks like i have to remove the valve cover.
anyone have a solution to this without removing the valve cover please reply????
August 23, 2013
  Followup from the Pelican Staff: I would try a shorter spark plug socket. You should be able to sneak it in there to get it out. - Nick at Pelican Parts  
Tonya Comments: how do you change the wire set on a 86 944. There seem to be several parts in the way, so what's the easiest way to do it? I am a female
July 17, 2013
  Followup from the Pelican Staff: The wires run along the cylinder head, you should be able to replace them without removing any major parts. - Nick at Pelican Parts  
frannyB Comments: I found that the plugs are much easier to deal with the valve covers off and the air cleaner cover off '86 Carrera. Time your plug replacements with a valve adjustment and you you will retain more of your hair. Also, use a plug socket with a universal joint built in. I bought one at a swap meet and it is sweet. The extension almost always comes off when I have tightened a plug and go to remove the socket. I got a small set of hooks from HF and I use that to pull the socket out. Plugs can be done in about 15min. Also, I think the Platinum plugs are really great and give a smooth idle. No exposed electrode to get carbon build-up. Always turn plugs in by hand first!

March 22, 2013
  Followup from the Pelican Staff: Thanks for the additional Info. We appreciate it.
- Nick at Pelican Parts
Johns96vette Comments: Good lord!!!!! Tell me you don't have to take the heads off a Porsche Carrera to get to the plugs!!!! Those German engineers- so mischevous to hide the plugs so only a Porsche mechanic earning $200 per hour can get to them.
March 3, 2013
  Followup from the Pelican Staff: They can be removed. Just takes time. - Nick at Pelican Parts  
1983Cabrio Comments: I really like the fuel hose idea. Those plugs are Waaaayyy in there. I have the AC in the way on the passenger side, and it's a whole day job.
January 25, 2013
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
bones Comments: Spark plugs on the right side,any easy way to get to plugs.
September 14, 2012
  Followup from the Pelican Staff: You can remove the muffler to make access easier. - Nick at Pelican Parts  
Leo Comments: do i need to drop the engine on my 1986 930 to replace the spark plugs?
June 26, 2012
  Followup from the Pelican Staff: No, here is forum thread discussing the procedure:

http://forums.pelicanparts.com/911-engine-rebuilding-forum/279368-changing-spark-plugs-930-a.html - Nick at Pelican Parts
larry Comments: how doeas one replace the plugs, not the wires, the plugs?
April 19, 2012
  Followup from the Pelican Staff: On what year and model? - Nick at Pelican Parts  
Craig Comments: My 1968 912 has a 1973 2.4 f.i. One problem is the charging light in the dash is on strong at idle and gradually dims as the revs go up but never goes completely off. The alternator is almost new and tests o.k., and the regulator is new. Is it possible that the bulb has to be upgraded to be compatible with the '73 alternator?

October 19, 2011
  Followup from the Pelican Staff: I would check voltage to the alternator from the bulb. The way the circuit works is, when voltage at the alternator is lower than the fuse that supplies power to bulb, the light is on. As voltage increases the bulb goes out. - Nick at Pelican Parts  
Joe R Comments: I've heard that reaching the plugs in a 3.2 Carrera is tough, is there a special tool that makes this easier?
October 16, 2011
  Followup from the Pelican Staff: There is a special spark plug socket. Also removing components in the way makes it easier. For example the muffler.- Nick at Pelican Parts  
87 targa Comments: I'm replacing the plugs in an 87 targa and they are a pain to remove do I need to remove the valve cover to access the plug better
September 26, 2011
  Followup from the Pelican Staff: You do not have to remove the valve cover. Just use the special spark plug socket and some patience. - Nick at Pelican Parts  
Brad Comments: I have a 2000 Carrera with 31K miles. Bought it 2 years ago with 19K. All necessary maintenance is being done at a Porsche dealer. They are only now recommending spark plug replacement at $1400. Was never mentioned previously. Car is not misfiring. Is this necessary ? How long should a set of plugs last ?
June 13, 2011
  Followup from the Pelican Staff: The recommended spark plug replacement interval according to Porsche is 30,000 miles. - Nick at Pelican Parts  
Steve L. Comments: I recently replaced the plugs on my '87 3.2 for the first time. The spark plug threads in a couple of the cylinders gave me the creeps. It's impossible to see how bad things are, but somebody messed up some threads on cylinders #1 and 3. Adding to my anxiety, was the fact that none of the plugs were properly tightened in the head.

I have used never seize on spark plug threads for decades and they have never backed out. In this case, I put never seize on the threads to slide the new plugs through the messed up threads into the engine.

In order to install the new plugs, I slid a short 2mm rubber fuel hose over the ceramic end of the plug for a tight fit. The hose should be just long enough to extend about two and one half inches out of the head. I then slid the plugs into the heads and hand tightened the plugs into the heads turning the rubber hose.

The hose allows the plugs to walk their way into the threads without possibility of further thread damage. Once the plugs are hand tight, pop the hose off the plugs and tighten with socket.

I will re-check the plugs for tightness in a few hundred miles.
April 29, 2011
  Followup from the Pelican Staff: Thanks for the additional info. We appreciate it. - Nick at Pelican Parts  
Cabman Comments: I just got a quote from a Porsche dealership for $2,200 to replace the spark plug wires on my 1987 911 Cab. Can this be? Is it that much work? Also using strict Porsche OEM wires from Germany cost almost $700. They are insured proper fit and are warranteed for 2 years. Worth it? The car is misfiring and it needs to be done, but curious of cost. Any help?
March 24, 2011
  Followup from the Pelican Staff: The wires can be expensive, but I believe our OEM German wires cost about $400 or so, not $700. Probably not worth the Genuine Porsche ones. Also, 2200 is highway robbery - you can do it yourself in an afternoon with about $50 worth of tools from Sears. - Wayne at Pelican Parts  
JerP Comments: What are the proper gap and torque on the spark plugs for a 1985 911?
October 2, 2010
  Followup from the Pelican Staff: Spark plug gap: 0.7 - 0.8 mm (0.028 - 0.032 in)
Spark plug to cylinder head: 30 Nm (22 ft-lb)
- Nick at Pelican Parts
wkbergman Comments: Good stuff, as usual.
Instead of putting any lube on plug threads [Porsche fears that might prevent good electrical contact] I scrape my pencil a couple of times across the threads, depositing some carbon powder as lube. Never a worry about a seized thread.
August 4, 2010
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
Kelboy Comments: I have 2005 porsche whats a good price to tune the engine ? Also what type of syn Oil should be used 5w30 05 10w40 fully sny . How long does it take to change sparkplugs and what should they be set at ?
July 14, 2010
  Followup from the Pelican Staff: On an '05, there's not much to do to "tune" the engine. Regular maintenance would include new plugs, new air filter and a new belt. That's about it. - Wayne at Pelican Parts  
bjm12001 Comments: I have an 89 Carrera that I noticed a #3 sparkplug electrode that was black on the back & light ash on the tip along with being "wet" during a routine valve adjustment 10 years ago. I replaced the #3 fuel injector and the problem went away. During a routine valve adjustment in 2008 I noticed #3 sparkplug slightly blackened on the back but not really "wet" but didn’t do anything at the time other than replace with a new WR7DC Bosch plug. In 2009 12 months & ~2K miles later I removed the plug to verify there was not a problem & it was the same issue I had 10 years ago. I know injectors go bad over time but what are the odds in 10 years I've had only 2 bad injectors & it was #3 injector both times? Am I doing something during the valve adjustment that is causing this?

December 31, 2009
  Followup from the Pelican Staff: I can't imagine what you could be doing. I think this is a coincidence. - Nick at Pelican Parts  
chris Comments: Thanks for all your info, I'll buy my next parts from you guys. Only this spark plug replacement article didn't address how to replace the plugs, only the wires. I'm trying to figure out if I need to remove some things in order to reach the plugs on the right side. 1996 - 911
November 19, 2009
  Followup from the Pelican Staff: You'll have to remove the engine splash shields and the heat shields, then the ignition coils. - Nick at Pelican Parts  

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