Thread: M104 noise from front top of engine - timing chain/tensioner?
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Old 10-09-2016, 02:19 PM
E_S E_S is offline
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Join Date: Jan 2008
Location: Norway, Europe
Posts: 81
This engine has got hydraulic valve lifters as far as I know. Oil is perfectly fine, level correct, pressure good and oil/filter changed 1500 km ago. I've heard the same noise from another M104 engine, but then again another without any noise. It doesn't seem to impact anything, but it doesn't sound very good at all. The noise seems to disappear at higher revs and it's not possible to hear it inside. The video makes it appear worse than it is.
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