jacob Posted January 26, 2011 Report Share Posted January 26, 2011 my 2008 Cayenne is miss firing on idle so i replace the coil packs & spark plugs but no luck what can i do next Link to comment Share on other sites More sharing options...
notfairno Posted January 26, 2011 Report Share Posted January 26, 2011 Get compression test done to check all cylinders and valve is healthy. Then check AFM (Air flow meter) may be feaking ( which is unlikely). Link to comment Share on other sites More sharing options...
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