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Bmw chain tensioner symptoms.
Symptoms of a damaged bmw timing chain tensioner include a clatter that can be noticed after the motor starts up and that fluctuates according to the acceleration in the engine.
In other cases the timing chain system might be trouble free if engine oil specifications and change intervals are followed.
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The timing chain is comprised of a series of links in the chain similar to those found on a bicycle chain.
Use online vehicle reliability information to predict timing chain failures for the types of vehicles you service.
Failing of a timing chain tensioner can occur slowly and if you do not catch it in time the slapping chain and lead to a number of engine related problems.
Timing chain and guide failures are relatively common on some vehicles even at the 100 000 mile mark.