pressure washing the engine.

[stealth908]

my engine bay looks like crap. can i pressure wash it?

i use the pressure washer at the car wash to clean the engine bay and engine of my 64 chevy truck and 98 malibu. the only things i cover on the truck is the distributor and carb. the malibu, i just go to town. i've never had a problem with this, but i want to make sure it's ok to do it to my GN.

what should i cover up if anything?

travis

 

[Turbo6inKY]

Cover the MAF, the coilpack/ignition module, and the cam sensor.

Don't hold the spray over any part of the motor for very long.

 

[Rickracer]

Stay away from the TPS

There used to be a detailer across the street fom my shop. I replaced TPS units for him 3 or 4 times om different vehicles cuz he wouldn't listen to that advice.

 

[turbot2112]

cover the powermaster too. dont even ask how i know this.

 

[wlaukaitis]

I am planning on doing this too, I think I am going to take the MAF out completely and cover the I/C and intake ports. My problem is really the lower half. I'd also like to clean the A arms and such as well.

 

[d0n_3d]

actually the only things that i cover up when pressure washing my engine compartment are 1. alternator and 2. relay switch for heater fan controls (always fried those suckers when pressure washing...always had the lower speeds but no high speed fan)

then once everything was dry, spray some tire cleaner on all the black parts and then wipe down...show quality look for cheap

 

[INEEDAGN]

The previous owner of my car fried the ECM after power washing the engine right before I bought it. It wouldn't fire one of the coils because of it. I figured it got the coilpack wet and shorted it back to the ECM, but later I read in a different thread that it's possible to get water to run through the firewall into the passenger compartment and get the ECM wet if you spray it just wrong. I don't know if it's true or not but it's something for you to think about.

bob

 

[progress1vebmx]

Or if you have leaky TTOPS the water will run down and eventually corrode your ECM =/