Question about 1998 Ford Expedition
I changed the plugs and wires and its still reading cylinder 2 misfire.what now?
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Posted on Jan 02, 2017
It could be carbon deposits on valve seats keeping valves from totally closing. You can try getting you a can of motorcraft PM3 top end engine cleaner and get engine up to operating temp then remove one of the small vacuum lines from the intake and draw the contents of the can slowly into the engine.After you have drawn in the contents shut engine off and let it soak for about 45 minutes then crank it back up and let it run until it clears. Now it will smoke like a forrest fire while you are doing this so don't be alarmed,just tell the neighbors you are spraying for mosqitos.This may cure the problem. If not you may be looking at a valve job.
This can be verified with a compression test if this is what is causing it.
Posted on Feb 05, 2009
since the problems appeared after the work, it is in the work. prob is in wires or plugs.. take no 1 plug out put it back in wire terminal, re install one of you old plugs into no 1 cylnder have someone turn eng. over ck for bright spark repeat for no 2. make sure plug gap is correct. if no fire to you plugs. then you know what to do replace the wires.
Posted on Apr 16, 2009
This should help:
Posted on Feb 19, 2010
Testimonial: "I was afraid of that. The one you need to get to is always the hardest to reach. The diagram was exactly what I needed. Thanks."
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