I do not believe that the misfire code can come from any reasson except electrically,
or electronically. So if you have already put a new Mopar plug and wire, and it is lean or rich, pull out that plug, if you test compression and it is normal only the injector, or a cranksensor may cause this. You could switch two and see, as long as it is not low compression. Do you understand? Which one(engine)?
Wednesday, November 4th, 2009 AT 11:14 PM