Saethorkristinn

Are you supposed to replace your timing chain, i got the m112 engine and the last owner tild me that you never have to replace it but i dont really trust that, my car is driven 186.xxx km

tjts1

Why do you want to replace the timing chain on an m112? What's wrong with it?

Rudeney

No, the timing chain in an M112 engine should outlast the rest of the car. Now, the M271 (I4 engine) uses a single-row chain and it has been known to break or stretch.

wanderlust360

And there is no easy way to check if the timing chain on a M271 engine has stretched, correct? I understand from reading other threads that a rattling noise on start-up might be the only indication of something going bad. I am guessing removing the valve cover and tugging on the chain would not be a reliable method of checking.
I have close to 200k on mine with the original chain. The chain pre-tensioner broke off a while back, but apparently did not cause any consequential damage at the time. Has anyone gotten recent quotes for replacing the chain?

Saethorkristinn

Theres nothing wrong with it, i was just curious about it

tjts1

The M112 timing chain is very reliable and should last indefinitely if you do regular oil changes.

RedGray

https://mbworld.org/forums/mercedes-...tensioner.html