How do I troubleshoot a malfunctioning ignition system on my Audi 80?

I recently purchased a used Audi 80 and have been experiencing issues with the ignition system. Occasionally, the car won't start and I have to repeatedly turn the key to get the engine to start. How can I troubleshoot and fix this issue?

First, check the spark plugs and clean or replace them if they are dirty or worn out. Next, test the ignition coil and replace it if necessary. Finally, check all the wiring and connections to ensure they are secure and not damaged.

One common issue with the ignition system in the Audi 80 is a faulty ignition control module. You can test this by using a voltmeter to check for a spark at the spark plugs. If there is no spark, replace the control module.

Another possible cause of ignition problems in the Audi 80 is a faulty starter. Check the starter solenoid and connections to make sure they are not corroded or damaged. You may need to replace the starter if it is defective.