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Old 09-06-2019, 09:28 AM   #1
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Join Date: Apr 2019
Location: Bulgaria
Posts: 34
Loud knocking sound / different symptoms!

Yesterday my 986 2.5L started to knock from the back / (subjectively right side).

Symptoms:
- audible only if in gear and moving
- NOT happening when cruising on neutral
- NOT happening / stops to knock when clutch is presed
- NOT happening immediately from start, only when car warms up
- more audible when climbing a steep hill
- I can also hear very similar sound but not so loud when I lower the right side of the car from being jacked up.

Visual inspection shows no rattle or damage on CV axle joints, I have old bushings (140k mileage), but I don't think they would hit so loud. It sounds somewhat like someone hitting wood with a hammer somewhere in the distance, but with force.
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