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  1. J

    Misfire on 4L SOHC

    Misfire on 2001 Explorer Sport Trac w/ 4L SOHC: Misfires between 1500 rpm and 3500+ rpm. Most noticeable on pulling hills. Occasionaly popping in exhaust system.Takes a long time to set code, but eventually sets P0301. All new plugs, wires, coil. Fuel trims normal. Replaced all valve...
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