BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > M3 (E90 / E92 / E93) > General M3 Forum (E90 + E92 + E93)
 
Strasse Wheels
Post Reply
 
Thread Tools Search this Thread
      03-02-2015, 07:20 PM   #1
mikusk
Enlisted Member
2
Rep
37
Posts

Drives: e92 m3
Join Date: Feb 2015
Location: slovakia

iTrader: (0)

cold start rattle,is this OK ? (vid)





only happens when cold starting,otherwise not present.

Last edited by mikusk; 03-02-2015 at 07:30 PM.
Appreciate 0
      03-02-2015, 07:31 PM   #2
mikusk
Enlisted Member
2
Rep
37
Posts

Drives: e92 m3
Join Date: Feb 2015
Location: slovakia

iTrader: (0)

fixed link.
Appreciate 0
      03-02-2015, 09:42 PM   #3
Tracyis300
First Lieutenant
Tracyis300's Avatar
United_States
16
Rep
300
Posts

Drives: 09 E90 M3
Join Date: Sep 2014
Location: Los angeles

iTrader: (0)

Sounds normal to me.
It's just the cold start cycle booting up.
Appreciate 0
      03-02-2015, 10:34 PM   #4
swagkingcole
Private
6
Rep
85
Posts

Drives: e92 m3 dct
Join Date: Apr 2014
Location: United States

iTrader: (1)

sounds normal
Appreciate 0
      03-02-2015, 10:39 PM   #5
caslca
Enlisted Member
United_States
3
Rep
41
Posts

Drives: '13 E92 M3 ZCP MineralWhite
Join Date: Jan 2015
Location: Seattle, United States

iTrader: (0)

sounds normal to me as well but my car doesn't do it. Mine is US spec E92 '13 ZCP
Appreciate 0
      03-02-2015, 10:42 PM   #6
caslca
Enlisted Member
United_States
3
Rep
41
Posts

Drives: '13 E92 M3 ZCP MineralWhite
Join Date: Jan 2015
Location: Seattle, United States

iTrader: (0)

btw, not same engine but very similar sound here:


Seems caused by tensioner chain. This m3post thread seems to refer to same issue on our engines:
http://www.m3post.com/forums/showthr...=412843&page=5
Appreciate 0
      03-02-2015, 11:39 PM   #7
anom3
Lieutenant
32
Rep
575
Posts

Drives: 2007 M3
Join Date: Apr 2014
Location: Behind the wheel

iTrader: (0)

this is normal.

not the same noise that i have reported in my extensive thread.

my understanding is this is caused by a 'dry vanos'.

you'll notice this is much more pronounced the longer the car sits without being started.

also, if you were to take a look at the audio of this noise, you'll notice it starts instantly after ignition takes place. the noise i was reporting was different, took place about 0.5 secs after ignition took place.
Appreciate 0
      03-02-2015, 11:41 PM   #8
NashvegasR
Second Lieutenant
United_States
8
Rep
206
Posts

Drives: 09 M3 e93 DCT, 07 335i e92 6MT
Join Date: Dec 2012
Location: Nashville TN

iTrader: (2)

Yes, normal

Normal. There are a ton of threads about this on here --- rattle on startup. My E93 M3 2009 does this about 50% of the time on cold start. A pal's M3 does the same. Not a great noise, but the dealer told me it's normal and it's definitely something that occurs on most of these cars.
Appreciate 0
      03-02-2015, 11:53 PM   #9
lve2xlr8
Captain
lve2xlr8's Avatar
United_States
24
Rep
916
Posts

Drives: '11 m3
Join Date: Aug 2008
Location: Los Angeles

iTrader: (7)

Mine does this occasionally as well
__________________
'11 M3
'00 M5 - Sold
Appreciate 0
      03-03-2015, 12:30 AM   #10
TX
Lieutenant
22
Rep
428
Posts

Drives: 2009 ///M3 E92 APW 6MT
Join Date: Dec 2010
Location: South FL

iTrader: (0)

Garage List
2009 E92 M3  [0.00]
Look around on here. One guy had his engine basically torn down and rebuilt trying to locate that noise. I don't know if there was ever a resolution. There was a PUMA case posted by someone also where it was fixed by the dealer. Something to do with the vanos gear / chain tensioner. Mine does it. It sounds like grinding bolts around in my engine for a second after the car cold starts sometimes. It's a slapping chain against a tensioner is my assumption. Doesn't make me feel warm and fuzzy inside, but I doubt any of us would have much luck resolving it.
__________________
Appreciate 0
      03-03-2015, 10:18 AM   #11
///M Power-Belgium
Major General
///M Power-Belgium's Avatar
Belgium
622
Rep
5,497
Posts

Drives: ///M3-DCT- E92 Silverstone II
Join Date: Jul 2012
Location: Belgium

iTrader: (0)

It's the metallic clunk noise when engine is cold .
A lot of S65's have this problem , and is caused by the Vanos-Gears .
Here a video of a very loud clunk noise , the video is not my car .

__________________
BPM DEV-Tune & DCT software update & Servotronic & coding///Alpine HID Angeleyes///Oem.exhaust mod.
Appreciate 0
      03-03-2015, 10:25 AM   #12
FISH22
Private First Class
FISH22's Avatar
7
Rep
134
Posts

Drives: '11 E90 M3 6MT
Join Date: Apr 2012
Location: Virginia Beach

iTrader: (0)

Garage List
2011 BMW M3  [0.00]
Is it a possibility that this sound is just a dry valve train upon start up? Reason I ask, is because I have noticed this in other high performance engines, mainly the S2000. I have owned 4 S2000s and all of them made this same noise right upon start up, if the car was sitting for a while. Over on S2ki it was mentioned that it was due to the valve train not getting oil instantly up top, and making the noise until it did (only a second). I have only owned my '11 M3 for a couple months, but it makes this noise if the car has been sitting for 12+ hours, and it sounds just like the S2000. Just my 2 cents.
Appreciate 0
      03-03-2015, 11:39 AM   #13
knevel
Private
5
Rep
55
Posts

Drives: your mom
Join Date: Feb 2015
Location: sneaking up behind you

iTrader: (0)

I haven't had cold start for a long time, but that sounds about right.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 06:09 PM.




m3post
m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST