Engine Knocking when Revving and Copper Flakes in Oil Filter
20

Asked by Matthew May 29, 2020 at 02:46 PM about the 2012 BMW 5 Series 535i xDrive Sedan AWD

Question type: Maintenance & Repair

Just bought it two weeks ago and noticed the knock. Local repair place said I
need a new engine because of bearings being bad. Used engine with similar
miles for $10,000. Is it possible to get new bearings instead of a replacement
engine? There's no reason to think the replacement wouldn't have the same
problem right?

3 Answers

F_O_R answered 4 years ago

You would have to tear down the engine to replace all the crank bearings and the crank would have to be machined.

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F_O_R answered 4 years ago

I would price a rebuild which I would hope could be done for well under 10 grand.

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