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International Automotive Technicians Network
Re: 2005 Ford F150 Cyl3 Misfire
Posted to Technical Discussion Forum on 2/5/2020

have you pulled the plug yet? we had 2 last yr with misfires shortly after spark plugs changed at dealership. It turned out the plugs were loose and had burned the electrode off bottom. They were the motorcraft updated plugs but none of 8 on either truck were ... Login to read more.