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P0307 Diagnostic Trouble Code Discussion for October 2013

Cylinder 7 Misfire Detected

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Trouble Ticket Help Requests for DTC P0307
Help Request Posted
2008 Ford F-250 Super Duty XLT 6.8L Misfire VIN: 1FTSX21Y58
P0307: Missfire on cyl. 7. Truck sets codes codes PO300 and PO316, there was a code for the trottle body out of range, removed and cleaned it. That code is no longer present. Removed spark plugs and checked, they were worn so I replaced them with motorcraft plugs. Code still came back s...
October 03, 2013
2005 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1GCHK232X5
P0307: Cylinder 7 Misfire Detected. This vehicle came to us after Chevrolet dealer changed filters and told customer "that is as good as it runs". Customer complains of knocking noise in engine up to approximately 1700 rpm, runs rough at idle and fuel mileage dropped from 16 mpg to 12 mp...
October 08, 2013