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)
 
EXXEL Distributions
Post Reply
 
Thread Tools Search this Thread
      12-06-2023, 04:46 PM   #1
M3MorganAUS
New Member
0
Rep
13
Posts

Drives: BMW E90 M3 M-DCT
Join Date: Dec 2023
Location: Australia

iTrader: (0)

Intermittent rattle/knock after cold start when idling

Hi Guys,

Long time lurker, first time poster. I have recently purchased my dream car; a E90 LCI M3 M-DCT. The car has developed a rotational rattle/knock that can be heard in the cabin after cold start when idling. The noise is not present at cold start, only at idle after cold start. Happens intermittently. Monday it was present, Tuesday and Wednesday it was absent, but today it was present. The noise goes away after driving. Could is be Cam/VANOS gear related?

I've tried searching the forum and nothing lines up with what I am experiencing. Ive listened for rod knock (take the car slowly up to 3000rpm 3 times etc.)

I'm relatively new to the car, I love it. However I have never owned a car like it so everything is quite new.
Appreciate 0
      12-07-2023, 05:46 PM   #2
Mr. BMW
Major
Mr. BMW's Avatar
261
Rep
1,389
Posts

Drives: 2012 E92 M3
Join Date: Feb 2006
Location: MA

iTrader: (0)

Garage List
2012 M3  [0.00]
2006 330i  [0.00]
2018 Jeep Grand Che ...  [0.00]
Quote:
Originally Posted by M3MorganAUS View Post
Hi Guys,

Long time lurker, first time poster. I have recently purchased my dream car; a E90 LCI M3 M-DCT. The car has developed a rotational rattle/knock that can be heard in the cabin after cold start when idling. The noise is not present at cold start, only at idle after cold start. Happens intermittently. Monday it was present, Tuesday and Wednesday it was absent, but today it was present. The noise goes away after driving. Could is be Cam/VANOS gear related?

I've tried searching the forum and nothing lines up with what I am experiencing. Ive listened for rod knock (take the car slowly up to 3000rpm 3 times etc.)

I'm relatively new to the car, I love it. However I have never owned a car like it so everything is quite new.
These cars make many strange sounds that you don't hear on other cars. Try to capture an audio clip of the sound and post it here and someone might be able to tell you what it might be.
__________________
12 M3 Interlagos Blue/Black
18 Jeep Grand Cherokee (Yeah, it's got a HEMI)
21 X3 Silver/Black(Wife's)
06 330i Monaco Blue/Black (retired)
02 X5 3.0 Topaz Blue/Black (retired)
Appreciate 0
      12-08-2023, 06:01 AM   #3
M3MorganAUS
New Member
0
Rep
13
Posts

Drives: BMW E90 M3 M-DCT
Join Date: Dec 2023
Location: Australia

iTrader: (0)

Quote:
Originally Posted by Mr. BMW View Post
These cars make many strange sounds that you don't hear on other cars. Try to capture an audio clip of the sound and post it here and someone might be able to tell you what it might be.
https://youtube.com/shorts/ygjaH6JTc...pD5zFe6ZSjW2No Here is the link. As I said, goes away after driving even for just 5-10 meters. Drove the car home from my parents tonight and it hasnít presented an issue as of yet.
Appreciate 0
      12-08-2023, 04:55 PM   #4
M3MorganAUS
New Member
0
Rep
13
Posts

Drives: BMW E90 M3 M-DCT
Join Date: Dec 2023
Location: Australia

iTrader: (0)

https://youtube.com/shorts/Fi__BHQqP...VceXtmTMA65ddz

https://youtube.com/shorts/o9kIiRNAx...cliqPOnYXeHi8F

I have 2 more videos. Both external. The first one is of the engine bay, I could hear it on the LHS. The second is a video of the drivers (RHF) wheel arch. There is a slight hissing from the oil filler cap so I think it could *possibly* be due to that. I have replaced the cap and cleaned off the peeling paint so that’d explain the leak.
Appreciate 0
      12-08-2023, 10:19 PM   #5
spammysammich
Major
spammysammich's Avatar
1494
Rep
1,041
Posts

Drives: 2009 E92 M3 Dakar Yellow II
Join Date: Oct 2021
Location: Edmonds, WA

iTrader: (0)

Garage List
2009 BMW M3  [10.00]
Search lifter tick.

What oil are you using?

If youíre in Australia summer heat will thin out oil and make all sorts or racket. Make sure you use a good quality oil of the proper weight, some people highly recommend against liquimoly

Read.
https://www.bimmerpost.com/forums/sh...php?p=22146523
Appreciate 0
      12-10-2023, 07:21 PM   #6
M3MorganAUS
New Member
0
Rep
13
Posts

Drives: BMW E90 M3 M-DCT
Join Date: Dec 2023
Location: Australia

iTrader: (0)

Quote:
Originally Posted by spammysammich View Post
Search lifter tick.

What oil are you using?

If youíre in Australia summer heat will thin out oil and make all sorts or racket. Make sure you use a good quality oil of the proper weight, some people highly recommend against liquimoly

Read.
https://www.bimmerpost.com/forums/sh...php?p=22146523
Funny you should mention that, I have used liquimoly 10W60. Would you recommend going to Castrol as they were the original supplier for these cars?

The cap itself could be an issue with the slight air leak. I am going to try to rectify that. The car is booked in to have its oil dropped and filter changed this week as Ive done 5000kms on the LM oil.
Appreciate 0
      12-10-2023, 09:46 PM   #7
spammysammich
Major
spammysammich's Avatar
1494
Rep
1,041
Posts

Drives: 2009 E92 M3 Dakar Yellow II
Join Date: Oct 2021
Location: Edmonds, WA

iTrader: (0)

Garage List
2009 BMW M3  [10.00]
Oil choice seems highly personal. I only recommend what I've used. Either the BMW branded 10w-60 or Motul 8100 X-power have worked. I avoided Liquimoly for the reasons i found in searching this site.
Appreciate 0
      12-12-2023, 10:20 PM   #8
M3MorganAUS
New Member
0
Rep
13
Posts

Drives: BMW E90 M3 M-DCT
Join Date: Dec 2023
Location: Australia

iTrader: (0)

Quote:
Originally Posted by spammysammich View Post
Oil choice seems highly personal. I only recommend what I've used. Either the BMW branded 10w-60 or Motul 8100 X-power have worked. I avoided Liquimoly for the reasons i found in searching this site.
Ill take them onboard. A new set of rocker covers is on the way as the magnesium ones are no longer sealing :/
Appreciate 0
      12-31-2023, 01:52 PM   #9
BimmerMan33
Private First Class
BimmerMan33's Avatar
United_States
116
Rep
178
Posts

Drives: 2011 BMW M3, 2014 BMW X5
Join Date: Apr 2014
Location: Illinois, USA

iTrader: (0)

Did you figure out the noise?
Try turning off the AC and see if it goes away.
Also could be related to the idler pulley or tensioner, they do make noise when going bad..
Appreciate 0
      01-08-2024, 07:08 AM   #10
M3MorganAUS
New Member
0
Rep
13
Posts

Drives: BMW E90 M3 M-DCT
Join Date: Dec 2023
Location: Australia

iTrader: (0)

Quote:
Originally Posted by BimmerMan33 View Post
Did you figure out the noise?
Try turning off the AC and see if it goes away.
Also could be related to the idler pulley or tensioner, they do make noise when going bad..
Hi BimmerMan33, only present on idle once warm so not belt related. The car is in the shop waiting for new VANOS covers and rocker covers to be fitted. I posted up a separate thread and my car apparently sounds normal. Canít be bearing related as it disappears after being driven. Will report back once the car is back up and running.
Appreciate 0
      01-17-2024, 01:55 AM   #11
The M3g
Registered
The M3g's Avatar
South Africa
0
Rep
1
Posts

Drives: Bmw M3 2008
Join Date: Jan 2024
Location: South Africa

iTrader: (0)

Quote:
Originally Posted by M3MorganAUS View Post
Hi Guys,

Long time lurker, first time poster. I have recently purchased my dream car; a E90 LCI M3 M-DCT. The car has developed a rotational rattle/knock that can be heard in the cabin after cold start when idling. The noise is not present at cold start, only at idle after cold start. Happens intermittently. Monday it was present, Tuesday and Wednesday it was absent, but today it was present. The noise goes away after driving. Could is be Cam/VANOS gear related?

I've tried searching the forum and nothing lines up with what I am experiencing. Ive listened for rod knock (take the car slowly up to 3000rpm 3 times etc.)

I'm relatively new to the car, I love it. However I have never owned a car like it so everything is quite new.
Did you figure this noise out?

At around 135000-140000km some cars will make a similar sound especially when it is very cold. A friend of mines E90 M3 did something similar and it turned out that a piece of the timing chain guide broke off and blocked his oil pick up, luckily not enough to casue catastrophic damage but it certainly cost a pretty penny to change them and our local tech said that this issue has become a more common occurence. The plastic obviously becomes fatigued due to several heat cycles. The plastic vanos caps can do the same thing so it's definitely something to look at.
Appreciate 0
      01-20-2024, 02:59 AM   #12
M3MorganAUS
New Member
0
Rep
13
Posts

Drives: BMW E90 M3 M-DCT
Join Date: Dec 2023
Location: Australia

iTrader: (0)

Quote:
Originally Posted by The M3g View Post
Did you figure this noise out?

At around 135000-140000km some cars will make a similar sound especially when it is very cold. A friend of mines E90 M3 did something similar and it turned out that a piece of the timing chain guide broke off and blocked his oil pick up, luckily not enough to casue catastrophic damage but it certainly cost a pretty penny to change them and our local tech said that this issue has become a more common occurence. The plastic obviously becomes fatigued due to several heat cycles. The plastic vanos caps can do the same thing so it's definitely something to look at.
This is definitely something I have considered, especially since I checked my drivers side VANOS covers and the intake one had a crack. The car is currently off the road waiting on parts. I posted up some videos up and the engine sounds normal according to other forum members.
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



All times are GMT -5. The time now is 05:25 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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