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P0308 Diagnostic Trouble Code Discussion for March 2011

Cylinder 8 Misfire Detected

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Trouble Ticket Help Requests for DTC P0308
Help Request Posted
2000 Ford Expedition XLT 5.4L Misfire VIN: 1FMRU15L6Y
P0308: testing and results. This vehicle is turning into a nightmare! It misfires under constant throttle while going uphill, more noticed with TCC engaged. I inspected #8 plug and found no issues, moved plug to #6 cyl. and misfire stayed on #8. Checked for vacuum leaks, none found. Fuel...
March 02, 2011
2002 Ford F-250 Super Duty Lariat 7.3L No Start, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNX20F42
P0308: Fault Cylinder 8 Misfire Detected. Need some help on this one. Last fall we replaced #8 injector and V/C harness/gaskets. Had smoke and dead miss. Now has smoke-whiteish blueish and real heavy on start up. Quits after it warms up. Was 2.5 qts low on oil. Customer had drove for a while i think w...
March 02, 2011