Thread: S54 Possible cam bolts failure sound? or normal
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      08-10-2023, 09:24 AM   #18
bkM3
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Drives: 06 M3 Vert 6MT Carbon/Black
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it turns out the knock/rattling sound was loose vanos bolts as well as one that completely broke. looks like we caught it before it did any damage,
this thread was a lifesaver. thanks guys

here is a video

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