chrisgbigman
6/3/2008 9:27:04 AM
i have a 03 expedition with 5.4 and it has 7 codes including #6,7,8 miss fire running to rich and running to lean. i hae change the plugs 3 weeks ago whne it did it the first time . at that time only 3 6 was miss firing so i changes the cop it took care of it and 3 weeks later it is back open for any help
alibabu22
6/6/2008 2:01:30 PM
Make sure that the springs that attach from the coil pack the top of the plugs are positioned properly. They are a pain in the ASS to get on straight and if there not perfect theyll miss every time.
Good luck, Alistair
