Have you checked the poly V belt pulley bearings, you will need to remove the belt to test them but as it rev related I would supect something in that area.
Have you managed to get MB or a garage to listen to the noise, I certainly don't like what I'm hearing if you have isolated the water pump, alternator, air con compressor pulley bearings which you did by removing the belt then this is something more serious, any signs of burning oil, water in the oil , oil in the coolant reservoir? problems starting?
Well there has got to be reason why the noise is there but sorry i can't help, how long ago since you changed the oil? as your aware normally the 'a class oil stays pretty clean is yours OK.
Even though the car is running OK I would try and get it checked out you obviously realise this or you wouldn't have asked for help.
when i bougt this car engin oil was very bad and the noise was less noist becouse oil was very sticky. when i change for mobile one 0W-40 the noise was louder..
Sorry to hear your bad news, easiest way out no is another engine which is always easier said then done becuae you hasve to get the old one out and the new one in which is a big job.
either way good luck which is more than you have had todate.
Lofty
Hello. My car has the same noise as in the video. Please tell me if after you replaced the engine, you discovered the cause of your chain snap.
Anyone know what causes that noise?
I don't know if I need to replace the whole timing chain or just the tensioner? I know the tensioner can be accessed from the top without removing the engine, but if it was the chain, I'd have to take it to the garage and empty my wallet
Any thoughts?
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