2017 E400 Chain rattle 30k miles
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2017 E400 AMG Line, V8 Swapped 1978 MGB, 2002 Subaru Legacy Wagon
2017 E400 Chain rattle 30k miles
Hello everyone. Upon startup my 2017 E400 has a bit of what I assume is timing chain rattle. It's not as loud as some videos seem to be online, but it is present, and I'd like to fix it before it gets worse. It is also noticeable at low throttle, low rpm acceleration. I have read as many posts as I can on the subject, but many of the threads seem to be about older variants of the engine and in other MB models, and so I am a bit unsure of what to do for mine.
I plan to reseal my timing cover, so I'll be in there anyway, and I figure it's a good time to address the chain rattle.
I'm wondering:
1) Does the 2017 m276 have the non-return/check valves? The TSBs I have seen cite specific engine codes, but I cannot seem to get a good enough view of the code on my block, thanks to an oil line or similar running directly in front of the stamping.
2) What should I be ordering in preparation for this? Other than new tensioners, is there anything else I should be trying/replacing?
3) Where can I find a procedure for removing the timing covers with the engine in the car? The videos I have seen are either engine out or of earlier versions of the m276 in other models, and I don't know how much of the accessory procedures are different.
4) any other tips or considerations
Thanks,
Peter
I plan to reseal my timing cover, so I'll be in there anyway, and I figure it's a good time to address the chain rattle.
I'm wondering:
1) Does the 2017 m276 have the non-return/check valves? The TSBs I have seen cite specific engine codes, but I cannot seem to get a good enough view of the code on my block, thanks to an oil line or similar running directly in front of the stamping.
2) What should I be ordering in preparation for this? Other than new tensioners, is there anything else I should be trying/replacing?
3) Where can I find a procedure for removing the timing covers with the engine in the car? The videos I have seen are either engine out or of earlier versions of the m276 in other models, and I don't know how much of the accessory procedures are different.
4) any other tips or considerations
Thanks,
Peter
Out Of Control!!
Joined: Apr 2019
Posts: 12,272
Likes: 6,918
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
low oil pressure
Hello everyone. Upon startup my 2017 E400 has a bit of what I assume is timing chain rattle. It's not as loud as some videos seem to be online, but it is present, and I'd like to fix it before it gets worse. It is also noticeable at low throttle, low rpm acceleration. I have read as many posts as I can on the subject, but many of the threads seem to be about older variants of the engine and in other MB models, and so I am a bit unsure of what to do for mine.
I plan to reseal my timing cover, so I'll be in there anyway, and I figure it's a good time to address the chain rattle.
I'm wondering:
1) Does the 2017 m276 have the non-return/check valves? The TSBs I have seen cite specific engine codes, but I cannot seem to get a good enough view of the code on my block, thanks to an oil line or similar running directly in front of the stamping.
2) What should I be ordering in preparation for this? Other than new tensioners, is there anything else I should be trying/replacing?
3) Where can I find a procedure for removing the timing covers with the engine in the car? The videos I have seen are either engine out or of earlier versions of the m276 in other models, and I don't know how much of the accessory procedures are different.
4) any other tips or considerations
Thanks,
Peter
I plan to reseal my timing cover, so I'll be in there anyway, and I figure it's a good time to address the chain rattle.
I'm wondering:
1) Does the 2017 m276 have the non-return/check valves? The TSBs I have seen cite specific engine codes, but I cannot seem to get a good enough view of the code on my block, thanks to an oil line or similar running directly in front of the stamping.
2) What should I be ordering in preparation for this? Other than new tensioners, is there anything else I should be trying/replacing?
3) Where can I find a procedure for removing the timing covers with the engine in the car? The videos I have seen are either engine out or of earlier versions of the m276 in other models, and I don't know how much of the accessory procedures are different.
4) any other tips or considerations
Thanks,
Peter
I think what you're hearing is exactly the condition that wears out the VVT lock pins to ultimately progress as startup rattle.
You're driving on really low oil pressure.
