Thread: High pitch buzzing noise from engine
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      11-08-2020, 08:26 PM   #5
bmwm3s65
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Drives: 2009 BMW E90 M3 6spd
Join Date: Feb 2016
Location: USA

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I had a similar sound on my engine, I just noticed it recently after I've had the car for 2 years. Mine was coming from the oil filter housing.
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