Ignition Coil Failure Due to Excessive Spark Plug Gap on Ford F-250 Super Duty

An illuminated Check Engine Light could indicate that one or more of the ignition coils has failed due to excessive spark plug gap. To fix this problem, the ignition coils that have failed, the spark plugs, and all coil boots should be replaced.

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Average mileage: (–)
Engines affected: 5.4L V8, 6.0L V8 Diesel Turbo, Gasoline
8 model years affected: 1999, 2000, 2001, 2002, more2003, 2004, 2005, 2006
9 people reported this problem
0 people shared problem details
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