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Keith Newby · 04-23-2009, 01:32 PM

I wonder if it's the same plug misfiring two years later. Perhaps the coil pack the plug attaches to is intermittent. It might be worth the time to switch the coil pack on the bad plug with that from another cylinder to see if the misfire then transfers along with it. I think an OBDII check would point out the bad cylinder.

04-23-2009, 01:32 PM	#2
Keith Newby Registered User Join Date: Nov 2005 Location: San Diego Posts: 200	I wonder if it's the same plug misfiring two years later. Perhaps the coil pack the plug attaches to is intermittent. It might be worth the time to switch the coil pack on the bad plug with that from another cylinder to see if the misfire then transfers along with it. I think an OBDII check would point out the bad cylinder.