How to diagnose an engine misfire in an Audi 80?

I have noticed that my Audi 80 is misfiring and experiencing a loss of power. What could be causing this issue and how can I diagnose and fix it?

First, check your spark plugs and ignition system. They may be faulty and causing the misfire. Also, make sure to inspect and possibly replace your fuel filter, as a clogged filter can cause similar issues.

Another common cause of misfires in the Audi 80 is a faulty oxygen sensor. If this sensor is not functioning properly, it can lead to an incorrect fuel-to-air ratio, resulting in a misfire. Consider replacing the sensor if all other diagnostic tests come back negative.

If the issue persists, it may be a problem with the fuel injectors. These may need to be cleaned or replaced. A professional mechanic can assist with this process and properly diagnose the issue.