Pressure washed engine bay, cyl 6 misfire

dnsherrill

dnsherrill

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DTC P0306, I tried to cover up every elec connection i could see with alum foil, the CP's and Alt were covered very well; I didn't cover every injector elec connection and did go kinda heavy handed spraying the int manifold, plug wires have about 50k on em and are about 4-5 years old...
 
Moisture got in there, just let it idle for ten or 20 minutes, it'll eventually dry out. Or better yet, take it to a shop and ask them if they can spray compressed air all over your engine to remove as much moisture as possible. I'm sure they might do it for free or charge you a small fee, worth it if you ask me.
 
Unplug the connectors for injector and coil and blow the water out with air..
 
yea, just opened it up and looked at it, plenty of water in there...tryed to vac it out, no luck, I'll try the reverse
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Diesel Dan, I wouldn't take my skateboard to a dealership, I haven't been to an honest one
 
I pressure washed my engine bay. It came out real nice. Of course the engine WASN'T IN IT at the time...:p
 
the plug well had quite a bit of water in it, I couldn't get 100% of it....still misfiring..leave it to sit unplugged- try again tomorrow night
 
Hence why you should never pressure wash an engine bay!!! You should've never allowed it to get that dirty to begin with. Remember these cars are 16+ years old. You are bound to open a can of worms. I clean my engine bays once every 6 months with a standard hose & dishwashing soap. It's strong but not strong enough to go into the wrong places. I use brake cleaner fluid or starter fluid wherever I see old grease stuck somewhere because starter fluid is under pressure & it evaporates. Works great. Once it's all done, dress her up a bit & presto!
 
I bought an Aurora from a guy once who was sort of a dealer. Not a regular dealership but he bought and sold cars on the side and was a retired salesman. So the car I bought was detailed very nice inside and out. Except for the engine bay. He said he has been selling for umpteen years and would never let the detailer wash down the engine bay. It wasn't filthy; it had been wiped down, but not pressure washed.
 
This is why I opted to not spray my engine down with even a garden hose..water and moisture gets in every little crack and crevice and even compressed air won't blow it all out unless you start taking every electrical connection apart..I just used some peoples advice and sprayed the grimey areas down with wd40 and wiped it..the rest evaporates on its own..its not show car clean but at least it runs and doesn't misfire.
 
I just talked to the mechanic who helped me out with the bent knuckle, he was saying to leave the car running when you spray it; as a way to detect faulty plug wires and or vac leaks...I'm sure I'll get it straightened out after work tonight, easily and inexpensively. Spraying it made the manifold and everything else look a lot better, with minimal elbow grease. Some people say WD40 attracts grease...?
 
Spraying water on a running motor with possible vac leaks is a not good idea. Its a good way to water lock that engine thou. Ever heard of someone driving thru a large puddle, then the car stalls and won't start again?

WD40s main ingredient is fish oil.. attracting grease?? There shouldn't be "grease" just hanging about in the engine bay
 
In the 2.5 years or so since the last two owners had my car, the engine bay is filthy, mostly dust everywhere. I need to clean it and have always had good luck washing engines but this thread gives me a little fear. Agreed with Alex, brake cleaner is a great degreaser but man, those cans ain't cheap.
 
Simple green with a tire brush.. Then a light spray, just enough to wash off the suds.
 
I think I found the best sh*t to use..I was just staring at a picture of my dirty engine bay and saw how ugly my radiator hoses were..so I thought hmm why not use some wesley's tire bleach on them..sprayed it on and scrubbed it with a brush, all the grime came right off, then rinsed with the hose. Then I started using it on other little underhood areas that wouldn't come clean with WD40 like the white taped wire harness on top of the motor...and again the grime melted off..this stuff works great.

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looks good K; did you remove and repaint the x-over tube?
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i just dried out #6 plug well- used a small vac hose; added some boot grease, no more misfire; lesson learned
 
I know a few people that use various types of tire cleaner/foams, those seem to work well too
 
dnsherrill said:
looks good K; did you remove and repaint the x-over tube?
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i just dried out #6 plug well- used a small vac hose; added some boot grease, no more misfire; lesson learned
Click to expand...

No I didn't remove it, I just sanded it down real well and taped everything off around it and painted it on the car..I'm sure there's some spots underneath that I missed but for a 10 minute job it looks decent.
 
WD40 eats up rubber; in better words rubber will soak up wd40 and slowly corrode. I wouldn't really use it around a car too often.
 
I've pressured washed every engine I've ever owned except for this one. Not sure why.
I have used tire cleaner numerous times on engines and it works great! It works good on most anything!
 
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