12 13 Notes on checking ignition system

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Troubleshooting

Fault in fuel injection system
Spark plug faults
Ignition coil faults
Further fault patterns with evaluation
Additional fault notes for troubleshooting

Oscillograms

Normal oscillators
Oscillograms of ignition coils from different manufacturers

Check

Secondary signal for stationary ignition distribution