BMW M3 Forum (E90 E92)

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


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
INDustry distribution
Post Reply
 
Thread Tools Search this Thread
      07-13-2018, 08:06 PM   #1
aptwave
New Member
aptwave's Avatar
Russia
4
Rep
12
Posts

Drives: BMW M3 E92 2012
Join Date: Sep 2017
Location: Moscow

iTrader: (0)

[RESOLVED] Trying to Identify Engine Rattling Noise. Video Included

Hello everyone,

Few days ago, after stopping my M3 E92 in front of my garage I heard this weird rattling sound comming from engine bay.

It is really hard to hear it, except you sitting near the front of the car. Sound is comming from passenger side. I also unable to find similar sound on YouTube or here on M3Post, so decided to create new thread.

You can hear it clearly from the begining of the video, dissapears at 0:08, when I moved phone little bit higher, and appears again at 0:17.

Anyone heard something similar before? I hope this is one of the pulley, and not something bad, like VANOS or some issue with engine head.


UPDATE - 17 Jul 2018:

So the issue was with tensioner pulley on A/C, power steering side. Replaced both pulleys, replaced belt and everything sounds really quite.

Original BMW pulleys can be replaced with INA - less money to spend, same pulleys as in original boxes.


Last edited by aptwave; 07-17-2018 at 04:37 AM.
Appreciate 1
Theodore295.00

      07-13-2018, 09:51 PM   #2
deansbimmer
BimmerPost Supporting Vendor
deansbimmer's Avatar
United_States
1688
Rep
2,159
Posts


Drives: 2011 E93 M3
Join Date: Nov 2014
Location: DFW, Texas

iTrader: (14)

Garage List
2011 X5M  [0.00]
2011 BMW M3  [0.00]
Could be a pulley, or the AC compressor. See a shop who can use an electronic stethoscope to isolate the source (or buy one on Amazon and DIY).
Appreciate 0
      07-14-2018, 11:10 AM   #3
aptwave
New Member
aptwave's Avatar
Russia
4
Rep
12
Posts

Drives: BMW M3 E92 2012
Join Date: Sep 2017
Location: Moscow

iTrader: (0)

Quote:
Originally Posted by deansbimmer View Post
Could be a pulley, or the AC compressor. See a shop who can use an electronic stethoscope to isolate the source (or buy one on Amazon and DIY).
Thank you for advice.

Bought stethoscope today and tried it on pulleys - bottom one sounds bad. Other spinning things sounds good, there's also no sound without belt so it is not from inside of engine.

Removed top and bottom pulleys and found that bottom one, with tensioner, has some noise when spinning it by hand, using stethoscope sound patters looks similar to my issue.

Going to replace it, pretty sure it will help.
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 -4. The time now is 01:45 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, 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