× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0308 Diagnostic Trouble Code Discussion for March 2011

Cylinder 8 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

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