My Daughter's 2000 F-150 Crew Cab 4x4 with a 5.4 keeps burning out the #5 Cylinder Coil pack. Have changed out 3 in the last 4 months. and the truck just started missing again today. The last one was change out, the Ford Tech. said he put on the test machine and found out he needed to replace the Elec plug for the Coil pack. After replacing the Elec Plug, Coil pack & the spark plug for the #5 cylinder the truck ran fine.
Anybody that might know what the problem is please let me know.