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...
Forum Discussion
turbojimmy wrote:
Yeah an 8% variation isn't enough to worry about. 10% is a good rule of thumb but I've seen worse variations in good running engines.
My money is still on fuel delivery. Just sayin...
Agree. While that may be the issue causing it to run rough, it may run forever like that. Only 3 causes of low compression I can think of.
Rings, valves or a head gasket. With the latter usually being 100% loss of compression.
I'd do more troubleshooting before tearing it down for sure.
