Rough idle after engine wash

[Porch40]

Hello, I was wondering if anyone has experienced rough/low engine idle after washing their engines. The first time I attempted this I used light pressure water followed up by drying with a leaf blower (I know what you're thinking - 200mph air + water = high pressure water OOPS! didn't occur to me until I was done ... sure gets rid of the water though!) After letting the truck sit for 2 days it started with no problems but the rpm quickly fell from 1100 to 400-500 & it stumbled there for about 2 minutes. I washed it again a few months later this time using very light water pressure & drying the engine with towels. It sat overnight & started with no problems the next morning but after 30 seconds or so the same rough idle returned. Since I was so careful the last time and used as little water as possible I am a little paranoid that there might be a leak in the plastic intake tubing or in the fusebox areas. Should I be covering these areas before washing ? Any insight would be greatly appreciated!! Thanks

[JVencius]

Cover and seal up as tight as you can anything electrical--distributor, fuse box, alternator, etc... before you was the engine and even then use low pressure water and still be careful. [img]graemlins/smokin.gif[/img]

[Capt. Caper]

Don't wash the engines. They have coil packs that short out.

[aleig14572]

Washing these engines like an older carbuerated motor probably isn't the best idea. I'd stay with something like Simple Green and an old towel, at least around the electrical components.