Detonation Spark Knock

1. Engine overheating.
2. Fuel pressure.
3. Exhaust Gas Recirculation (EGR) operation.
4. Transmission/Transaxle Converter Clutch (TCC) operation.
5. Positive Crankcase Ventilation (PCV) operation.
6. Oil fouled spark plugs.
7. Fuel octane rating.
8. Excessive carbon on pistons.
9. Engine timing.
10. Electronic spark advance.