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Timing chain replacement

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Old Nov 5, 2019 | 04:37 AM
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C240 w203
Timing chain replacement

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
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Old Nov 5, 2019 | 07:54 AM
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Why do you want to replace the timing chain on an m112? What's wrong with it?
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Old Nov 5, 2019 | 02:31 PM
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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.
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Old Nov 6, 2019 | 11:23 AM
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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?
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Old Nov 6, 2019 | 12:26 PM
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Originally Posted by tjts1
Why do you want to replace the timing chain on an m112? What's wrong with it?
Theres nothing wrong with it, i was just curious about it
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Old Nov 6, 2019 | 12:27 PM
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Originally Posted by Saethorkristinn
Theres nothing wrong with it, i was just curious about it
The M112 timing chain is very reliable and should last indefinitely if you do regular oil changes.
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Old Nov 6, 2019 | 11:20 PM
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Originally Posted by 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?


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