Faulty igntion system causing misfire detection system to reduce engine power on Porsche 928

The ignition system must be maintained—distributor caps, rotors, and cables require attention. The misfire detection system can cause the engine to shut down by half. The root cause of the problem must be ascertained before repair.

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Average mileage: (–)
Engines affected: 5.0L V8, 5.4L V8
5 model years affected: 1990, 1991, 1993, 1994, more1995
5 people reported this problem
0 people shared problem details
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