Car Problem Reports

Ford F-350 Super Duty Ignition Coil Failure Due to Excessive Spark Plug Gap

Ford F-350 Super Duty Problem
11 Reports
Me Too

Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006

Engines Affected: 5.4L V8, 6.0L V8 Diesel Turbo, 7.3L V8 Diesel Turbo, Gasoline

Average Mileage: 149,000 mi (68,000 mi - 230,000 mi)


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.

  • Visitor, , 7.3L V8 Diesel Turbo, 230,000 mi

    I lost power when drive my truck and a have check engine light too problabili it my tank because the most people have same problem I think need clean the filter inside the line diesel when I do if fix we send note what happen

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  • rodog, , 5.4L V8, 68,000 mi

    Have not made the repair yet, just had the service engine light come on, and checked it at AutoZone. this sounds like my problem

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