Horrible cold start sound

GSTE34 · 07-08-2018, 07:31 PM

I hear a loud rattle, crank sound. I’ve heard it could be that vanos oil check valve or timing chain guides. Some days it’s louder than others but it’s been going on for 3 days in a row now on cold start. Anyone ever experienced this?

Shamza · 07-09-2018, 03:29 AM

It's typically the chain tensioner(s) but without a video no one will be able to tell you.

roastbeef · 07-09-2018, 03:42 AM

yea, when i wasn't daily driving my car, i would start it about every week or two and it would have a pretty good chatter for about two seconds. did the same thing before and after my bearings were replaced.

///M Power-Belgium · 07-09-2018, 05:54 AM

Quote:

Originally Posted by GSTE34

I hear a loud rattle, crank sound. I’ve heard it could be that vanos oil check valve or timing chain guides. Some days it’s louder than others but it’s been going on for 3 days in a row now on cold start. Anyone ever experienced this?

The cold start clunk (rattle) noise is normal for the S65 engine .
When *NOT DD* during cold start we can hear the loud rattle crank noise (same situation here)
Over the years I saw it fixed , but only once . It was the *Vanos-Gears* and it was a PUMA-case fixed under BMW warranty.

In this thread (with videos of the noise in #15) you can read pretty much everything about the S65 cold start clunk noise => https://www.m3post.com/forums/showthread.php?t=996069

Note: Keep in mind the S65 Vanos-Gears are not cheap !

Jackntulee · 07-09-2018, 06:08 AM

Quote:

Originally Posted by ///M Power-Belgium

The cold start clunk (rattle) noise is normal for the S65 engine .
When *NOT DD* during cold start we can hear the loud rattle crank noise (same situation here)
Over the years I saw it fixed , but only once . It was the *Vanos-Gears* and it was a PUMA-case fixed under BMW warranty.

In this thread (with videos of the noise in #15) you can read pretty much everything about the S65 cold start clunk noise => https://www.m3post.com/forums/showthread.php?t=996069

Note: Keep in mind the S65 Vanos-Gears are not cheap !

+1

m235boy · 07-09-2018, 07:01 AM

Quote:

Originally Posted by roastbeef

yea, when i wasn't daily driving my car, i would start it about every week or two and it would have a pretty good chatter for about two seconds. did the same thing before and after my bearings were replaced.

Same here, mine does it every single time if not driven for a few days. It's the car's way of complaining we should be driving it more lol

timothy2001 · 07-09-2018, 08:10 AM

Huge appreciation for the wealth of knowledge on the forum.

I really figured it was a normal sound but it's nice to see this reinforcement..

amrazM · 07-09-2018, 08:33 AM

Oil pressure building in the vanos system, the rattling noise is from the sprocket.

GSTE34 · 07-09-2018, 02:27 PM

Thanks for the response guys but i know the rattle is normal but this is not normal i just don’t know how to upload videos here i tried when i posted and it said invalid. It’s a really loud clank before the rattle.

GSTE34 · 07-09-2018, 02:36 PM

Quote:

Originally Posted by ///M Power-Belgium

I posted this video now 3 times on this forum ,and so here is it again to make this clunk noise very....very clear !
Note : This is not my car and actualy it is "the loudest clunk noise" i ever heard from our S65 engine !

Exactly the same noise as mine i found this in a comment

///M Power-Belgium · 07-09-2018, 03:45 PM

Quote:

Originally Posted by GSTE34

Exactly the same noise as mine i found this in a comment

Yep . I know , and it's normal for garage queens .
Like I said above , daily drivers don't have the noise .

PUMA-case...Read B => Fix was Vanos-Gears !

roastbeef · 07-09-2018, 05:24 PM

Hmm mine sounds like rubbing some empty soup cans together for a few seconds. I don't know what that slap sound was...

GSTE34 · 07-09-2018, 06:33 PM

Quote:

Originally Posted by ///M Power-Belgium

Yep . I know , and it's normal for garage queens .
Like I said above , daily drivers don't have the noise .

PUMA-case...Read B => Fix was Vanos-Gears !

Yea I’m at 95k deff not garage queen on second engine

///M Power-Belgium · 07-09-2018, 06:51 PM

Quote:

Originally Posted by GSTE34

Yea I’m at 95k deff not garage queen on second engine

DD ?
What happend with your first engine ?

GSTE34 · 07-09-2018, 07:16 PM

Quote:

Originally Posted by ///M Power-Belgium

DD ?
What happend with your first engine ?

It found it’s way out with out warning

///M Power-Belgium · 07-10-2018, 05:54 AM

Quote:

Originally Posted by GSTE34

It found it’s way out with out warning

Was it bearing failure ?

GSTE34 · 07-11-2018, 08:59 AM

Quote:

Originally Posted by ///M Power-Belgium

Was it bearing failure ?

It was rod bolt failure. One bolt on rod #1 had backed out and ended up in. The pan with no damage. I guess i got lucky with that factory extra defect. 🤦🏻*♂️

///M Power-Belgium · 07-11-2018, 10:36 AM

Quote:

Originally Posted by GSTE34

It was rod bolt failure. One bolt on rod #1 had backed out and ended up in. The pan with no damage. I guess i got lucky with that factory extra defect. 🤦🏻*♂️

OK. I see . Thank you Sir for the information

bstone801 · 07-13-2018, 09:23 AM

When my wife hears this noise every so often she always gives me the look of, is that normal? Then I just give her the look back like it is a race car, those things are expected.

Scrippy · 07-15-2018, 11:48 PM

I'm on 3rd set of RB's@160,000. I drive my car daily and love it non the less 4 years later. I have noticed I only hear vanos/valve chatter on cold startup if my car has sat for 3 days without use which is rare. It has done this since 23,000 on its first set of RB's and it would do it 3 days from now if I didn't drive it. I'm on the fence whether it's the vanos gears or simply one of the hydraulic lifters that bled out while sitting stagnant for a few days. Once oil pressure builds it goes from collapsed to filled. Noise lasts for 1-2 seconds. I love the S65.

07-08-2018, 07:31 PM	#1
GSTE34 First Lieutenant 64 Rep 330 Posts Drives: E34 turbo E90m3 Join Date: Mar 2017 Location: orange county iTrader: (0)	Horrible cold start sound I hear a loud rattle, crank sound. I’ve heard it could be that vanos oil check valve or timing chain guides. Some days it’s louder than others but it’s been going on for 3 days in a row now on cold start. Anyone ever experienced this?
	Appreciate 1 ///M Power-Belgium63062.00 Tweet Quote

07-09-2018, 03:29 AM	#2
Shamza Enlisted Member 9 Rep 39 Posts Drives: E92 M3 Join Date: Jan 2014 Location: United Kingdom iTrader: (0)	It's typically the chain tensioner(s) but without a video no one will be able to tell you.
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07-09-2018, 03:42 AM	#3
roastbeef Lieutenant General 11582 Rep 12,722 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	yea, when i wasn't daily driving my car, i would start it about every week or two and it would have a pretty good chatter for about two seconds. did the same thing before and after my bearings were replaced. __________________ Instagram; @roastbeefmike
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07-09-2018, 08:10 AM	#7
timothy2001 Major 849 Rep 1,180 Posts Drives: 2011 E92 M3 6MT ZCP Join Date: Oct 2014 Location: NE Florida iTrader: (0) Garage List 2011 M3 E92 [0.00]	Huge appreciation for the wealth of knowledge on the forum. I really figured it was a normal sound but it's nice to see this reinforcement..
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07-09-2018, 08:33 AM	#8
amrazM mTekMods 2130 Rep 2,892 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	Oil pressure building in the vanos system, the rattling noise is from the sprocket.
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07-09-2018, 02:27 PM	#9
GSTE34 First Lieutenant 64 Rep 330 Posts Drives: E34 turbo E90m3 Join Date: Mar 2017 Location: orange county iTrader: (0)	Thanks for the response guys but i know the rattle is normal but this is not normal i just don’t know how to upload videos here i tried when i posted and it said invalid. It’s a really loud clank before the rattle.
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07-09-2018, 05:24 PM	#12
roastbeef Lieutenant General 11582 Rep 12,722 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	Hmm mine sounds like rubbing some empty soup cans together for a few seconds. I don't know what that slap sound was... __________________ Instagram; @roastbeefmike
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07-13-2018, 09:23 AM	#19
bstone801 Private First Class 94 Rep 198 Posts Drives: Alpine e90 M3 slick stick Join Date: May 2015 Location: Boise, ID iTrader: (0)	When my wife hears this noise every so often she always gives me the look of, is that normal? Then I just give her the look back like it is a race car, those things are expected.
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07-15-2018, 11:48 PM	#20
Scrippy Lord Scrip 1812 Rep 3,013 Posts Drives: 2011 M3 Coupe Join Date: Jan 2012 Location: LA,Ca iTrader: (0) Garage List [0.00] 2007 BMW 335i [0.00]	I'm on 3rd set of RB's@160,000. I drive my car daily and love it non the less 4 years later. I have noticed I only hear vanos/valve chatter on cold startup if my car has sat for 3 days without use which is rare. It has done this since 23,000 on its first set of RB's and it would do it 3 days from now if I didn't drive it. I'm on the fence whether it's the vanos gears or simply one of the hydraulic lifters that bled out while sitting stagnant for a few days. Once oil pressure builds it goes from collapsed to filled. Noise lasts for 1-2 seconds. I love the S65. __________________
	Appreciate 0 Quote