Engine Bay Cleaning

Well there are quite a few schools of thought in this area, none are necessarily right or wrong however I will basically describe what has worked for me over the years.  To those who have seen my engine bay it is always clean, corrosion free and neat.
In the pic to the left you will see that I have removed the inlet manifold, cam belt covers, cam belts and mount.  This was because we were in the process of another job and thought this to be the ideal time for a good clean.  You will notice the timber over the inlet manifold, this is to keep the water out.  I also made sure I sprayed some CRC on the cam's after the clean to stop corrosion.
 
What you will need:
  1. High pressure washer.
  2. Compressor, line and blower
  3. Degreaser
  4. Good cleaning brush

If you wish to raise the front of the car you will also require a good set of jack stands, never get under a car not properly supported.

How to do it:
In general if using a diluted degreaser, and these are quite often the best to use because the good ones are ver aclinic, ie they quite often contain an amount of caustic soda it is recommended you wet down the area to be cleaned first to make the cleaner more effective.  If using these type of cleaners be warned, they can lift paint and protective coatings on alloy parts.

If using a non caustic cleaner such as a spray type cleaner, there is no need to wet down the bay first.  Just make sure the engine is cool.

Give a little time for the product to soak in, agitate with the cleaning brush.  Don't worry too much about missing bits as the finer details can be taken care of on the second clean.  Give a good wash down with the pressure washer.  Wear eye and face protection to ensure you do not get solution in your eyes.

Now is the time to have a good look around and make sure you get the stubborn bits and any other areas you missed.  There will be plenty.

After having done the clean use the air blower to blow all electrical connections, ignition parts and around the injectors.

Now your pretty much done.  It does not hurt to start the engine and run it until it has warmed up to ensure it is properly dry.  In some cases you will notice a bit of a miss, especially when trying to give a small rev, this is just a bit of moisture which the heat will eliminate.

Madmagna : Monday, 25. August 2003 21:36:27