Quote:
Originally Posted by rusnak
I would never ever use a presure washer on paint. Never. Ever.
You have to turn the pressure way down and watch the seams and where you point the spray when you use a pressure washer on an engine. Water goes where it should not.
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I've washed countless engines w/ pressurized water, maybe 100(?), including virtually every vehicle I've ever owned. On older vehicles, some drying with compressed air and/or the hot sun might be necessary afterwards and older distributor caps need to be dried-out. This takes a grand total of 30 seconds.
Within the bounds of common sense, "anything that can't handle getting wet in an engine compartment probably needed attention anyways", is the info I got a long time ago. The common sense aspect would be not to shoot water into an intake or pressure wash soft insulation under the hood, etc...
I've used very pretty high pressure on an engine and compartment with zero damage dozens of times. (More than 1400 psi., for sure). If you don't know what you're doing, leave jobs like this to someone who does. If you have some basic mechanical aptitude and common sense, power wash engines all you want. I can't tolerate a dirty machine.
