I have a 2000 5.4L that I washed the motor. It now has a misfire. I replaced all the plugs and blew everything out. First I got a #2 misfire then I got a #2 and #6 misfire. I reset it and then I got a # 5 misfire. Reset it again and got another #5 misfire. Coul I be missing something that could possibly be wet?

 

I would say that you have coil pack problems. Did the same thing with mine. Changed plugs, fuel filter, cleaned MAF but the problem persists. My CEL hasn't come on yet. It's in at the dealer right now and I know they are going to come back with a faulty COP.

Read this link - http://www.fordf150.net/forums/viewtopic.php?t=24947
this guy was having the same problem and he had a bad COP.

 

Same problem here.
Misfire #6 - P0306.
I suspect a bad COP/plug or 02 sensor.
I'm hoping it's not ready to blow the plug.
Either way I'm getting both replaced tomarrow.
I'll post the results.

 

I cant even fathom that people still power wash their engines.

Do you hose down your PC when it gets dusty?

Good luck though.

 

I "power wash" my motor. I can't stand a dirty motor (neither do dealers when you trade). I had a 96 ranger, it had 170,000 on it and the motor looked brand new, never gave a bit of trouble. Haven't had any trouble yet out of my F150 (knock on wood) 65,000.

CDB03STX

 

with todays cars, there are a lot of wires running around in the engine bay. It wasn't always this way. I wouldn't recommend power washing an engine today.

 

Just got mine back from the dealership. #8 COP was faulty. Not sure if it was attributable to me washing the engine or the 143k on it. Whatever it was, I will never wash my engine again.

 

I'm with cdbo, getting the engine wet should not cause major problems. It's not like the engine doesn't get wet during a hard rain. The water that enters through the radiator is blown back onto the engine. Of course I don't recommend spraying directly onto the electricals. But, you should be able to hose down the engine every now and then. Me thinks I will check with a tech at the dealer and also at a detail shop I know. I bet they do it everyday.

 

STOP WASHING YOUR ENGINES!!!! USE A LITTLE ELBOW GREASE AND WIPE THEM CLEAN GEEZZZZZZZ...

 

There has to be a safe way to wash your engines, what would you cover to keep it safe? I would think the alternator would be a possible hazard but people submerge their vehicles and they still run, and I know I've seen wet alternators, so it beats me as to what to cover and how to clean what I cover.

Someone here has to be knowledgeable enough to know how to wash a frikkin engine.

 

Simple Green and a hose is all I use. Warm engine first (not hot), spray it with diluted Simple Green (full strength on grease or oil deposits) let it soak and hose it off. Start it up to warm it again and let it dry. Do not use high pressure near you coil packs or firewall electrical connectors (or grommets). 82000 miles, clean engine, no problems yet.

 

Has anyone tried using one of those little steam cleaner gadgets? Like what would be used for cleaning tile around the bathroom tub. I wonder how well those would do, and not make a water mess?

 

that is a great idea, I have a disgustingly muddy mess under my engine and have had it for thousands of miles, I can't handwash all of it! I need to find a way before I sell it.

 

You have to be even more careful with steam cleaners. Since its a fine mist, its much easier for the water vapor to get into the plug wells/in the COP boots and cause problems.

 

I doubt a dripping fiesta of high powered water is less likely to damage something or get into anything for that matter. A mist might tickle a spark plug at best.

Can someone please point out exactly where the coils are as well as the sparks on the 5.4L v8, I have an 02. I want to be extra careful so a photo of where they are from the top view of the motor would be great, thanks.