12 13 Notes on checking ignition system

Troubleshooting

1. Fault in fuel injection system
2. Spark plug faults
3. Ignition coil faults
4. Further fault patterns with evaluation
5. Additional fault notes for troubleshooting

Oscillograms

1. Normal oscillogram
2. Oscillograms of ignition coils from different manufacturers

Check

1. Secondary signal for stationary ignition distribution