I recently noticed that my Audi A4's engine has been making a strange noise. It sounds like a knocking or tapping sound. It doesn't seem to affect the performance of the car, but it's concerning. What could be causing this and what should I do?
ReplyI had a similar issue with my A4 and it turned out to be a problem with the engine valves. I recommend taking your car to a trusted mechanic for an inspection.
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