Ignition System
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that both fuel injector fuses are not open. An open fuel injector fuse causes 4 ignition coils and 4 injectors not to operate. Inspect the ignition coil circuits and the fuel injector circuits for an intermittent short to ground. Replace the fuse.
- Inspect for proper ignition voltage output with the Spark Tester (J 26792).
- Remove the spark plugs and inspect for the following:
- Correct Heat Range
- Wet Plugs
- Cracks
- Wear
- Improper Gap
- Burned Electrodes
- Heavy Deposits
- Determine the cause of the conditions before replacing the spark plugs.
- Inspect for bare or shorted ignition wires.
- Inspect for loose ignition coil grounds.