How do I troubleshoot a misfiring engine on my Audi 80?

My Audi 80 is experiencing a misfiring engine. I have already replaced the spark plugs and checked the ignition coil. What could be causing this issue and how can I fix it?

A common cause of a misfiring engine in an Audi 80 is a faulty fuel injector. It is recommended to have a mechanic check and potentially replace the fuel injector to resolve the issue.

Another possible culprit could be a clogged air filter. Make sure to regularly replace your air filter to prevent a misfiring engine.