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      09-08-2017, 12:46 PM   #529
Race_Doc11
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Quote:
Originally Posted by ///M Power-Belgium View Post
Yep ! That's what I said above .Same situation here , and the cold start clunk noise comes from the Vanos gears .

Saw only one person who fixed the noise by replacing the Vanos gears under BMW warranty and it was a PUMA case .

And no one understood why the noise was fixed ...Because his old Vanos gears were replaced by exactly the same new vanos gears ..
OMG this is still going! I'm glad to hear it is not causing any catastrophic engine failure.

Last edited by Race_Doc11; 09-08-2017 at 10:07 PM.
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      09-08-2017, 07:38 PM   #530
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Originally Posted by Race_Doc11 View Post
OMG this is still going! I'm glad to hear it is not causing an catastrophic engine failure.
Yes this thread is still alive . Just like our cold start clunk noise
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      11-10-2017, 11:26 AM   #531
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Quote:
Originally Posted by ///M Power-Belgium View Post
Doc yes , I agree with your comment .
But actually I can hear like you said 2 different kind of noises on my S65.

1- The loud single clunk noise .
2- The rattle clunk noise (sometimes 3-4-5 shorter rattle noises in 2 sec.)

I'm sure the base-cause of the noise from nr 1 + 2 are the same and I think it's *the amount* of the force that is behind it...

Video # 1 shows you the loud single clunk noise .
Video # 2 shows you the rattle clunk noise => video from #16 page 1 in this thread => http://www.m3post.com/forums/showthread.php?t=996069
And like I said above I have both => #1 + # 2

I'm 100% sure if I replaced the Vanos gears the noise would be gone , but deep pockets are required !
I know also this noise can't be healthy for our S65's , on the other hand I know a lot people over the world and they have this noise for 5-6 years ...

Note : Videos are examples and not my car .

Thanks for sharing my video. This is my car and after 6 years - 78k miles run strong, no issues. Happens on occassion after long sitting periods. NORMAL.
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      11-10-2017, 11:32 AM   #532
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Originally Posted by Stronie View Post
Thanks for sharing my video. This is my car and after 6 years - 78k miles run strong, no issues. Happens on occassion after long sitting periods. NORMAL.
I know . Hope you don't mind ? Because the noise was very loud and clear in your video.
But actually the noise is NOT NORMAL !
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      11-17-2017, 05:45 PM   #533
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Well, I must say that my own loud "CLACK" at start-up has now gone away completely...at least since the last several times I have cold-started it after a couple days. What's changed? I replaced the exhaust vanos gears on both banks of the motor.

I was in the process of replacing my valve cover gaskets and discovered the plastic retention cap on the exhaust gears only were starting to work themselves crookedly on the gear. Concerned, I purchased a pair of used vanos exhaust gears that were in excellent shape. They were the same mileage as mine so I installed them, slightly timed the engine, closed everything back up, and I have not heard that sound ever since.

*major shout-out to forum member DeansBimmer for selling me the parts and helping over the phone while I did this in the garage.

Of course i'm not trying to stir up a scare and say those plastic/teflon covers will come off and damage the engine in everyone's cars, but they can certainly pop loose over time and make noise. Worth a look next time you change your valve cover gaskets.

...now, if I could just resolve the 2008 MT clutch rattle in neutral while parked

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      05-23-2018, 11:19 PM   #534
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Do we have a certain conclusion to this "issue" yet?
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      05-24-2018, 06:35 AM   #535
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Both timing chain tensioners cheapest place to start..
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