5.4 misfire
#1
5.4 misfire
I have a 01sd with a 5.4 and 108000mi I have a misfire at idle Thur driving range when you get on in it runs fine for a minute then it start missing again i put new plugs in at 100 (AL plugs) i have new cop (all 8) no codes no cel flash i put heat in the tank to make sure no water in tank new fuel filter