Want to test the chain drive of Mercedes-Benz models with M271 engine (EVO)? No problem!
Rattling noises may be heard after a cold start in models with M271 engine (EVO). This may be caused by wear of the chain drive, sprockets, or elongation of the timing chain. This can lead to incorrect timings and, in the worst case, to engine damage. It is advisable to check the chain drive if …