Engine noise

2011 AUDI A5
126,000 MILES • 4 CYL • TURBO • 4WD • AUTOMATIC
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DIVIDES
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Does this sound to you like a bottom engine noise? I am hearing it from the too, car still runs great but loud, it's an upper noisy, could timing chain cause such noise? Oil is good, no codes.
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Apr 10, 2022 at 3:20 PM
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BORIS K
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Hello,

As the noise is at half the engine speed it sounds like it is coming from either a hydraulic valve lifter or rocker arm. This can be caused by bad or low engine oil, low oil pressure, worn hydraulic lifter or damaged rocker arm

Please see good video.
https://youtu.be/T0y6qByzs6Q

At times the lifter for the high-pressure pump wears which also could make a similar noise

See video on how to check it.
https://youtu.be/2jCzoQcDEkQ

Please let us know how you get along.

Cheers, Boris
Apr 11, 2022 at 7:53 AM
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DIVIDES
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You are right. Same conclusions here from reading. Thanks a lot.
Apr 11, 2022 at 7:56 AM
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