Engine wash gone wrong
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Senior User
Joined: May 2002
Posts: 321
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From: Hollywood, FL
Engine wash gone wrong
Hey guys, I did something stupid yesterday. I am prepping my 2000 EXPY for sale and decided to do a top to bottom clean job to increase the resale value. I even got the wild idea of washing the engine, despite the little voice in my head screaming, “No, don’t do it!” I bought some Citrus Gunk, soaked the engine and flushed it off with an open-ended water hose. I never used any real pressure because I didn’t want to get water where it didn’t belong.
Well, it seams like water got where it shouldn’t of….. Now I can’t tell if the transmission or engine is giving me problems. It might be both! At idle the RPM’s jump (engine problem). While driving, the entire truck stutters like mad when the tranny shifts gears, until speed is picked up in the new gear, even at 70 mph.
Any ideas as what to look at first, or should I just take it in to a dealer???
Thanks, Mr. Waterlogged
Well, it seams like water got where it shouldn’t of….. Now I can’t tell if the transmission or engine is giving me problems. It might be both! At idle the RPM’s jump (engine problem). While driving, the entire truck stutters like mad when the tranny shifts gears, until speed is picked up in the new gear, even at 70 mph.
Any ideas as what to look at first, or should I just take it in to a dealer???
Thanks, Mr. Waterlogged
Last edited by deanjet; May 12, 2007 at 06:40 AM. Reason: spelling
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Joined: Jan 2005
Posts: 196
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From: Franklin, NC
I did the exact same thing last summer. It turned out to be a coil pack. It takes about $75 and 20 min to fix. Dealer charges $318. I would bet the farm on coil pack. Have check engine light read to find out which cylinder is misfiring. If a light hasn't come on yet, just keep driving, it will come on. If I remember correctly, the cylinder order starts with front drivers side to back 1-2-3-4 then passenger front to back 5-6-7-8.
Last edited by davisenvy; May 12, 2007 at 06:56 AM.
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From: Franklin, NC
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From: Hollywood, FL
I got a code P0302, #2 cyl missfire. Now my problem is I can't get my CD to work in my laptop to find out the P/N for the COP or where in the heck it is located. Anybody feel like telling me where the "COP" is? I assume it is near the spark plug (which of course, I will be looking for as soon as I get off work this afternoon) 
Thanks in advance - Dean 
Thanks in advance - Dean
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Senior User
Joined: Jan 2005
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From: Franklin, NC
Passenger side, second one back. It is the thing that pushes down over the spark plug. Just go to your local autoparts store and tell them the year and model of your truck and they will give you the correct part. Motorcraft is ideal, but not necessary. It took me 10 min to change mine out.
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Senior User
Joined: May 2002
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From: Hollywood, FL
Got it changed, 90% fixed, engine still misses a little. I think I know why, the #2 COP was a slightly wet. If it doesn't run better after a few days of dry out tme I will blow out all the spark plug holes. 
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Senior User
Joined: May 2002
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From: Hollywood, FL
Drove the truck for another half hour with the engine missfiring. Finaly got an engine light again, #5 COP bad. Changed it, now the truck runs smooth as silk. $150 later and my engine is nice and clean (and it will never get cleaned again as long as I own it!)
Tuned
Joined: Jan 2005
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Originally Posted by amm888
we need a sticky on this forum that reads "Don't Wash Your Engine!"
What he could have done is simply dry out the COPS, right? No $
I'm just careful around areas like these. Wash the lower stuff more seriously.
