Timing chain "whistle" noise
Recently (2 weeks) Ive noticed a whistling noise that varies with rpms. I thought, at first, it was the turbo making the noise. Reading on here I suspect the timing chain/guides.
I have a 2012 328i with78, 000 miles.
Looking in the oil fill cover there is no obvious wear on the chain, and seemed tight when I tried to move/wiggle it.
A few questions :
How long can a slightly noisy timing chain last before self destruction?
What else might be causing the noise?
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2006 328i
2007 X3
2004 Jeep Rubicon
1973 Austin Mini
Cape Breton, Canada
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