I would not recommend a power washer to clean these engines. About 3 or 4 months ago, another poster did just this. His truck rain fine on the way home....the next morning, all heck broke loose. It stumbled, stalled, and then would not restart. He claimed he disconnected every connector (many were wet inside) and tried to dry everything out. He said it got better after a few days, but was still throwing codes.

Your truck though. I'd go the route of simple gree or 409 with lots of paper towels, but not a power washer!

 

So simple green, let it sit, and a light mist? I got an air compressor

 

What about just a normal hose with a nozzle and some cleaner? Thats not very pressurized.

 

Just leave your truck running when washing and drive it for like 6-10 mins to dry the engine. I did not throw any codes and I soaked my engine with water. But there's a reason I left my motor running while washing it so I didn't have any issues starting it. The heat off the motor will dry the water up also while driving.

 

Or you can let it idle for alittle and shut it off and the heat will stay there while you clean

 

Ive done hundreds of motors with a pressure washer...just leave it running, wet it, spray it with a degreaser (Purple Power, Simple Green, etc.) use a brush on the really bad parts, make sure to get underneath the hood good, let it sit for a few minutes, then hose it down. I keep my pressure around 3000 PSI and keep it back from the motor and spray it.

on a side note, Ive used a steam cleaner before. It works really good and is easy to use. I used it on every part of the car that gets really nasty...wheels, undercarriage, engine bay, brake calipers, and even got inside the car and removed stains in the carpet. its a good investment if you are really **** about your vehicles