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#bmw #n47 #bmwrepair
Here you can hear the difference between BMW N47 disel engine sound, when chains MUST be changed and after all three chains, tensioners and sprockets were changed.
At 00:11-00:17 you can clearly hear noise like "Shk"-"Shk"-"Shk" coming from the timing chains.
At changing process noticed, that all chains were longer than new ones, and there was an impressive free movement between all the pieces of chain. It was very risky to drive with old ones.
After change all these noises disappeared.

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