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Showing results for tags 'spark plugs missing'.
My 2004 Cayenne started missing. This happened pretty much after I put some fuel in it that may have been bad. I tried using fuel treatment, gas dry, etc but it still kept missing. Finally the CEL went on, code reader pulls cylinder misfire on 2,3 and 5 since the car has 107k on it and has never had coils or plugs I figured it was time since I know that is a common cause if misfire. when I did the job I discovered that the coils were covered in a oily slime as well as the spark plugs. Only two cylinders were basically clean. The plug threads were covered in this crap too please pics. I'm assuming this is not normal but is it simply from having bad/cracked coils or is more going on? Spark plug gaskets come to mind. im a decent amateur work on many of my vehicles, so any leads would be appreciated regards roger