Vehicles affected by service bulletin: The problem: Timing chains on N63 engines have been found to stretch and wear out prematurely, resulting in premature valvetrain wear and reduced engine ...
The answer to the question about how long timing chains last and whether they need to be replaced has two possible answers. It all depends on your answer to this question: Do you maintain your car ...
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Ask Honest John - When should I check the timing belt on my BMW?
When should the timing belt on a 2015 BMW 320d with 77,000 miles on the clock have the tensioner checked annually and adjusted?
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