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What are the common causes of a rough idle in an Audi A4?

I have been experiencing a rough idle in my Audi A4 recently. What could be causing this issue and how can I fix it?

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Answers (2)

A

One common cause of a rough idle in an Audi A4 is a dirty or faulty fuel injector. You may want to try cleaning or replacing the injector.

S

Another possible cause is a clogged air filter. Check your air filter and replace it if it's dirty.

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