|Sixth in a series...
Cleaning the engine at first looks like a
daunting task, but if you take your time and have patience the benefits will last for
Lets assume you have an
older BMW whose engine has never been touched beyond changing the oil and minor
maintenance. You look at all the grease and gunk and want to say "Forget it!" My
Porsche 911E was like that, the car had been raced, rallied and toured to the point I had
over 300,000 miles on it. The engine was well maintained and clean by those standards. But
not where I thought a person could put their hands in there without coming out with a
So where do you start? With a
good engine wash. Take a can of engine cleaner (GUNK or some other comparable product) and
go down to the local "Do It Yourself" (DIY) car wash. Why the DIY, because;
A) The DIY tanks are set up for yucky engine junk and
will not hurt the environment
B) Most of us do not have a high-pressure hose at home; youll need it.
C) The area around your car will be a mess afterwards
Here are the following things
you will need to take with you on your journey to the local DIY (do-it-yourselfer).
Tape, Baggies, toothbrush,
plastic wrap, rags, 2 plastic trash bags, towels, note pad, rubber bands, gloves and lots
First thing to do is protect
your electrical components. Take a baggie and put it over the distributor, next use the
rubber band or tape to secure the baggie in place. Each model is unique on where the
electrical components are located, my car has electronics on the left side of the engine.
I use the plastic wrap to protect this area and tape to secure it. Look anywhere else the
water may cause you car-starting problems. If you have exposed carburetors, use the
plastic wrap or Baggies to protect them.
Next thing I do is disconnect
the coil wire, this way I wont pull a no-brainer of starting the car with plastic
inside the engine. You can guess why I started doing this J . Write yourself a note to
reconnect the coil wire and put it on the steering wheel. On the note pad, write down the
places you put the plastic and tape/rubber bands, it may seem redundant but better safe
than sorry. Now take the towels and place them over you fenders and the deck lid. This
will protect your paint from any debris and chemicals that may over spray. I suggest you
wear old clothes while cleaning your engine and use gloves to protect your hands from the
chemicals (latex is best).
Now you are ready to attack the
built up yucky gunk. Take your engine cleaner and spray it liberally in the areas of the
engine that have the most built up grease on them. Let the engine cleaner soak for a few
minutes, it will start eating away at the grease and dirt. Depending on how bad the build
up is, this can take anywhere from a few minutes to 20 minutes. You probably will not get
it all this first go around, so keep that in mind. While the engine cleaner is soaking,
take the toothbrush and gently work the engine cleaner on the worst spots, if you have a
severe build up, you may have to do this with a larger (not stiffer) brush. Once you have
determined the engine cleaner has stopped working, you are ready to steam clean.
Set the DIYs wand setting
to engine or steam clean (it may be slightly different depending on where you live). Take
care not to use the wand on the exterior paint of your car. The heat and pressure from the
wand was not meant for your paint. Now use the wand inside the engine compartment to steam
away the engine cleaner and grease. Be patient and get the wand onto the nooks and
crannies. Do not forget to get the sides of the engine compartments as well, dirt gets
kicked up into the engine from the fan and always seems to find its way on the
shelves of the engine.
While you are steaming the
inside of the engine, make sure you do not get water inside your plastic covers. Once you
are satisfied you have taken out as much dirt as possible (this go around), set the wand
to rinse. The rinse water usually has a softening agent and will rinse the chemicals out
of the engine.
A word of warning, GUNK works
great but smells horrible. If you use GUNK, do not do this on the same day you are going
to use the car for a date or tour. It takes a couple days for the smell to go away. There
are other engine cleaners out there, I have tried the Citrus ones (they smell better) and
GUNK. For the nasty jobs I use the GUNK, for the easier ones (like the new car) I use the
Citrus engine cleaners.
When you finish rinsing the
engine out shut off the wand. Now take the rags you brought with you and wipe down the
engine. Make sure you use some pressure on the rags while wiping it down. The grease has
softened because for the heat of the water and will come off easily in your rag. When you
are finished with one rag (because it is too dirty or wet) put it in one of the plastic
trash bags. Keep wiping down until the engine is rather dry or you run out of rags. Next
take the towels off the deck lid and fenders. Wipe down the paint with the part of the
towels that did not get wet or exposed to the chemicals. When done with the towels, put
these in the other trash sack.
Now you are ready to get the
engine ready for starting. First take ALL the plastic, tape and rubber bands out of the
engine. Next reconnect the coil wire and make sure there are not any other foreign objects
in the engine, like towels, toothbrushes or gloves. Check your notepad to make sure you
got all your protective wrapping out.
You may want to put a few more
quarters in the machine and rinse down the area you have been working. Chances are some of
your greasy gunk might be on your shoes or get on someone elses, be considerate.
Sometimes our BMWs do not want
to start right away after a washing, make sure you give it plenty of time to start and
take care not to flood the engine. If you protected you electrical components from water,
your BMW should not have any problems starting up.
If you should have a problem,
push the car into the sunshine and open the deck lid. Within a few minutes the components
should dry out and youll be on your way.
If your engine was really bad,
you may have to do the engine wash a couple times to get the worst junk out. Bare in mind,
the grease and gunk took years to get there and it will not give up its home easily.
Well talk about getting
you engine clean in a series of articles. Next time I talk about cleaning your fan and