Scratchy sound around oil ventilation valve
Thread Starter
Member
Joined: Jul 2019
Posts: 122
Likes: 41
2007 CL600
Scratchy sound around oil ventilation valve
Hi all,
Been trying to figure out a noise that's coming from the left front camshaft area, specifically around the plastic oil separation valve that sits on the timing cover. You can find a video of the sound here:
I was talking to an S65 owner who had a similar-ish issue which was the centrifugal oil separator that sits just inside this timing cover, and I changed this as a precaution to no success (old one had some cracks in it so it was a good move regardless).
Does anyone have any idea what this sound could be?
It is definitely not belt related and can be heard with a stethoscope only at the timing cover where the black plastic valve mounts - basically I think the noise is coming from the camshaft but can't figure out what it is.
If any other M275 owners could have a listen to their engines in this same area I would be interested to know if it makes a similar sound. It only makes this sound when warming up. When the engine is hot it is very quiet.
Thanks all
Been trying to figure out a noise that's coming from the left front camshaft area, specifically around the plastic oil separation valve that sits on the timing cover. You can find a video of the sound here:
I was talking to an S65 owner who had a similar-ish issue which was the centrifugal oil separator that sits just inside this timing cover, and I changed this as a precaution to no success (old one had some cracks in it so it was a good move regardless).
Does anyone have any idea what this sound could be?
It is definitely not belt related and can be heard with a stethoscope only at the timing cover where the black plastic valve mounts - basically I think the noise is coming from the camshaft but can't figure out what it is.
If any other M275 owners could have a listen to their engines in this same area I would be interested to know if it makes a similar sound. It only makes this sound when warming up. When the engine is hot it is very quiet.
Thanks all
Last edited by pillowshot; May 2, 2020 at 02:10 AM.
Hi all,
Been trying to figure out a noise that's coming from the left front camshaft area, specifically around the plastic oil separation valve that sits on the timing cover. You can find a video of the sound here:
https://bit.ly/2VLzXkg
I was talking to an S65 owner who had a similar-ish issue which was the centrifugal oil separator that sits just inside this timing cover, and I changed this as a precaution to no success (old one had some cracks in it so it was a good move regardless).
Does anyone have any idea what this sound could be?
It is definitely not belt related and can be heard with a stethoscope only at the timing cover where the black plastic valve mounts - basically I think the noise is coming from the camshaft but can't figure out what it is.
If any other M275 owners could have a listen to their engines in this same area I would be interested to know if it makes a similar sound. It only makes this sound when warming up. When the engine is hot it is very quiet.
Thanks all
Been trying to figure out a noise that's coming from the left front camshaft area, specifically around the plastic oil separation valve that sits on the timing cover. You can find a video of the sound here:
https://bit.ly/2VLzXkg
I was talking to an S65 owner who had a similar-ish issue which was the centrifugal oil separator that sits just inside this timing cover, and I changed this as a precaution to no success (old one had some cracks in it so it was a good move regardless).
Does anyone have any idea what this sound could be?
It is definitely not belt related and can be heard with a stethoscope only at the timing cover where the black plastic valve mounts - basically I think the noise is coming from the camshaft but can't figure out what it is.
If any other M275 owners could have a listen to their engines in this same area I would be interested to know if it makes a similar sound. It only makes this sound when warming up. When the engine is hot it is very quiet.
Thanks all
I have had all kind of noises on my V12 engines
but need a better recorder to give it a try
can you do that ? I have studio monitors on my pc
Thread Starter
Member
Joined: Jul 2019
Posts: 122
Likes: 41
2007 CL600
Thanks for chiming in. Unfortunately there aren't too many folks about the V12 board. I'll try to get a few more recordings.
Hi @pmercury
Thanks for chiming in. Unfortunately there aren't too many folks about the V12 board. I'll try to get a few more recordings.
Thanks for chiming in. Unfortunately there aren't too many folks about the V12 board. I'll try to get a few more recordings.
probably a problem of not having the skills or cash for maintaining them
personally I am in total love with the MB V12
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here if you don't have it yet
https://mega.nz/file/NapxUBTS#GgFAvN...6fF9QJQPuEacoU
https://mega.nz/file/NapxUBTS#GgFAvN...6fF9QJQPuEacoU
Thread Starter
Member
Joined: Jul 2019
Posts: 122
Likes: 41
2007 CL600
here if you don't have it yet
https://mega.nz/file/NapxUBTS#GgFAvN...6fF9QJQPuEacoU
https://mega.nz/file/NapxUBTS#GgFAvN...6fF9QJQPuEacoU
Going to try a slightly thinner when cold oil. Have ordered some 0W40 to replace the 5W40 that's currently in there. Seeing as the noise all but disappears when the engine is hot it may be oil flow connected.
