Quote:
Originally Posted by Opie55
My answer is no to all four questions. I have washed my engine bays on cars many times and have never has a single issue. I do not shoot a high pressure hose directly at the alternator, the engine computer or major electrical connections or other control units, but it will not hurt them to get wet. The main thing you do not want is to shoot water into the air intake. So depending on what you remove, and how the intake is designed on your engine, a plastic bag and rubber band may be needed.
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+1.
I just spray it down in a wash bay from a few steps back to reduce the pressure. Soap then rinse.
Your engine bay gets wet every time you drive on the highway in the rain. The sensitive components like computers are in a dust/waterproof compartment typically. Dust is just as bad as water for computers.
Just don't go crazy and never wash a hot engine, I drive 2 minutes down the street to the wash bay, engine is completely cold (ambient temp) before I leave.