CAMAROZ28AQUINO

i washed the engine on my car with just a hose and some multi-purpose cleaner, blew it all out with an air gun from a compressor, let it dry for 2 days. Started er up and drove it and its missfiring bad..it sometime barely idles. i know somethings wet and its arching out but i dont know what. any ideas?

SStheBest

iTrader: (2)

pull the plugs...i have done this too, HOWEVER i did not use compressed air....i have a manual fan switch in my car...so i pop the hood let them run and let mother nature dry er out for about 3 hours

kyles2000z

iTrader: (8)

the bst thing to do is immediately strat the car after the engine bay is spray, that way the heat will help things dry quicker, or so ive been told?

RPM WS6

iTrader: (3)

Getting any SES lights?

Did you get the PCM wet?

SStheBest

iTrader: (2)

thats actually what i do....except the last time i did that the alternator got wet and i had a sqeak for about a month i couldnt get rid of

CAMAROZ28AQUINO

yeah got the pcm wet. i forget the code but its saying its a multiple missfire and also a bank 2 sensor o2 is bad...i forgot to say that the car was on a hoist and i pressure washed the underneath......you think the o2 is bad causeing the missfire? what side is bank 1 on?

3.4camaro

iTrader: (1)

I would change the plugs and wires.

Those wires cause problems disproportionate to their size.

rajiv1998

i was just gonna clean my motor, but after reading this im afraid to

CAMAROZ28AQUINO

dont be afraid, just dont use any pressure...i messed up by not running the engine while cleaning it...i let it sit over the weekend to drie which caused the problem (i think)

nytmare1

iTrader: (7)

I assume you mis-spoke since cleaning your engine/bay while the engine is running is probably not a good idea. Starting your engine shortly after cleaning is is probably not a bad idea and could help dry things up a little faster.

I clean my engine/bay using a solution of Simple Green and water (50/50). I squirt it onto a slightly warm engine (making sure to wrap my air filters and fuse boxes in plastic), let is soak in for a minute and scrb anything that looks dirty using any variety of brushes and rags. I then rinse it down with a garden hose ensuring not to blast anything too hard. After that I drag out my leaf blower and dry off anything that looks wet. To finish it off, I spray down the engine bay with foaming tire shine and wipe it down after is soaks in for a few minutes.

I've used the above procedure on 5 different cars and I've never had a problem with anything.

Things I would not recommend:

- Using a pressure washer
- Spraying down a hot engine (parts tend to crack)
- Spraying water directly onto the alternator, fuse box or PCM

Marc

bjamick

iTrader: (31)

Ya i bet one of your coil pack has got water or moisture in them and not sending the correct amount of voltage to the plug causing your missfire.

RPM WS6

iTrader: (3)

I would never use high pressure to wash the engine bay. Ever.

There is no need to run the engine right afterward. I usually let it sit for a few hours, never caused a problem.

98RedZone

iTrader: (1)

Check for a leak around your EGR, where it bolts to the intake. It happened to somebody on here before.