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How can I troubleshoot an issue with my Audi 80's engine misfire?

Recently, my Audi 80 has been experiencing problems with a misfiring engine. It is affecting the performance and fuel efficiency of my car. I have checked the spark plugs, ignition coils, and fuel injectors, but everything seems to be in good condition. What steps should I take to diagnose and fix this issue?

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Firstly, check the engine's compression to determine if there are any issues with the valves or piston rings. If the compression is low, it could indicate a serious problem that needs immediate attention. Additionally, make sure to inspect the vacuum lines and sensors as they can also affect engine performance.

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Another common cause of engine misfires in Audi 80s is a clogged or faulty catalytic converter. If you haven't replaced yours in a while, it may be time for a new one. Also, consider getting a diagnostic scan to check for any error codes that may point towards the issue.

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