Cylinder 4 miss fire code p034

Asked by Joshua Oct 22, 2015 at 03:15 PM about the 2007 Subaru Impreza

Question type: Maintenance & Repair

2 Answers
3,485

Steve answered 9 years ago

change the spark plug, if it still has a miss, change the sparkpug wire if it has one, or the COP if its that style

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TheSubaruGuruBoston answered 9 years ago

You mean 304. See my response to other poster. Before changing the wire just twist the coil end #4 wire so it doesn't touch metal, and make sure the plug end boot is PUSHE ON securely. Clear CEL. It it recurs check plug. If wet or bad replace; if wet use stop-leak in oil to close up oil leak. Very rarely will a coil pack be bad.

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