Great forum!! Looking for advice on engine miss and 2 error codes
 

Its an 05 screw 5.4L reading 2 codes

P0308 #8 misfire detected
P0174 System to lean bank 2

2 problems I am looking for advice on
It just died the other morning and wouldnt start.. cranked fine but no go.. after about 10-15 mins I tried it and it fired to life. Airblock in fuel line? or something more sinister?


Also, spark plug change about 3 months ago.. still misses and runs a bit ruff
Could it be as simple as a bad cop.. Can I swap the cop from 8 to another, clear the codes and see if the problem moves to another cyl? or would I be better off looking at sensors somewhere??

Thanks for any advice as I am going to the mountains labor day weekend and would love to feel safe on the drive :)

I think you might have a injector acting up on the #8 cylinder.

Move the COP to another location and see if the misfire moves with it :-X22

The lean code, I'd check for vacuum leaks, and clean the MAF, change the fuel filter.

If the misfire stays in cylinder 8, sounds like a vacuum leak at the intake/injector, or a bad injector.