Is there any reason I should not pressure wash the engine. Anything i need to cover up other than the air filter that I'm not thinking of at this time?

I just need to get in around the bottom of the engine as I already have everything else shined up.

 

just dot direcly hit the altinator and your all good, i do it all the time

 

I know this is an old thread but I do mine all the time. Little simple green and a brush. Ocd action.

Dean snow are you still on here. Wanted to talk to you in the 2021.

 

do not spray the fuel pump if it's hot!! . When I did fuel Inj repair more then one farmer came in it ran good till I pressure washed it. best to wash it cold. Ken

 

When I power wash, I usually get some water in the fuel filter sensor which triggers the "water in fuel" light on the dash. Just unplug it & blow it out/ let it hang down & dry out on its own. Couple hours will do it.

 

What else gets water in it that doesn't have a water sensor, is my thinking....
Water could easily get under the valve cover gaskets or even blow chunks off the tappet cover gasket, making a big new leak. I would be easy with a pressure washer on the engine.

 

My tappet cover got to leaking so bad I had to change it pretty big job power steering dint leak but it was off so I put as seal kit in it the big oring for the tank was broken in 3 places but dint leak after putting new seals in the pump it leaks next I need to do the pan gasket ken

 

I love that this thread is still getting checked on. Besides doing it completely cold and keeping away from the alternator, anyone have any major issues? My engine hasn't been cleaned in at least 15 years.

 

I've never pressure washed my diesel. I had ignition issues doing it on a gasser though. Had to pull and dry all the plug wires. That was back in the 60's when engines still had distributors and no computers.

 

so is it harmful for the car ?

 

I don’t think I would chance it.But I can tell you pulling into a streaking beacon with a semi I would get the engine cleaned about every other time.I mean steam coming off the manifold that you couldn’t hardly see the engine and alternator and everything got pressure washed never had a problem .But big trucks do it all the time.