All the conections inside the engine bay are water tight unless you spray them directly and very close. I woudn't use a pressure washer though, just pinch the end of you water hose with your thumb.I wouldn't. I've seen to many cases on the forum where people wash their engine with water, then they post here and want to know what is wrong. Too many electrical parts and connections, not like the old days.
WD40? Really? Doesn't it attract dust like crazy?very easy, this is a big thread about this on a bimmer forum, I tried the process. Its very easy and works VERY VERY well.
this is the only way I clean my engine bay now. Also the more often you do it, the easier it is.
its a really old thread, but the pictures speak for themselves.
Warm up the engine and turn it off. Cover the obvious connectors and the alternator. Aluminum foil work good. A plastic bag wrapped around the alternator and filter element (if you have a cold air intake) works too.should i do it myself or have a detailer do it, what u guys think? Also what to cover and with what.
Do it yourself.
- Cover up electronic with aluminium paper.
- Remove shortram and cover the air intake with aluminium paper.
- Do not use pressure hose.
- Spray some degreaser.
- Use armor-all to get that black/wet effect.
- Drink beer.
- Get chicks with your clean engine bay.