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What is the cause of engine knocking in an Audi 80?

Audi 80 owners have reported experiencing engine knocking while driving. This sound can be heard under load and can indicate a serious issue with the engine. What could be causing this problem?

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One of the common causes of engine knocking in an Audi 80 is using low-quality fuel. Make sure to only use high-quality fuel that meets the manufacturer's recommended octane rating.

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Another possible cause of engine knocking in an Audi 80 is a faulty knock sensor. This sensor is responsible for detecting abnormal engine vibrations and sending signals to the engine control unit. If it is faulty, it can lead to engine knocking.

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