2013 F-150 5.0 running rough
2013 F-150 5.0L 2WD Got a CEL and took it to parts store and their OBDII reader said cyl # 7 misfire. Truck seemed to run fine and it went away pretty quickly, so I just disregarded it. About 3...
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That's a good point. If they only gave you a percent low, they really just did a cylinder contribution test, and not an actual compression test. There could still be carbon buildup on the valve causing that variation.
