Rattle under load on low RPMs

mariusc · 01-20-2019, 06:41 AM

I'm experiencing a strange (for me at least) rattle noise under load. It follows the RPM, and is most noticeable on low RPMs. This could of course be because of lower noise from the engine itself...
No noise without load.

I was thinking it could be the stock dual mass flywheel, but I haven't heard this noise anywhere else.

I've even tracked the car after the noise appeared. It has gotten a little worse, but not directly related to the hard (ab)use at the track.

Short clip:

2010 E90 335i N54. FBO, MHD Stg 2+.

Any ideas?

Sam_M · 01-20-2019, 08:27 AM

Sounds like a rod bearing to me

01-20-2019, 06:41 AM	#1
mariusc Enlisted Member 32 Rep 39 Posts Drives: 2010 335i, 2009 M3, 2019 i3s Join Date: Aug 2017 Location: Oslo, Norway iTrader: (0)	Rattle under load on low RPMs I'm experiencing a strange (for me at least) rattle noise under load. It follows the RPM, and is most noticeable on low RPMs. This could of course be because of lower noise from the engine itself... No noise without load. I was thinking it could be the stock dual mass flywheel, but I haven't heard this noise anywhere else. I've even tracked the car after the noise appeared. It has gotten a little worse, but not directly related to the hard (ab)use at the track. Short clip: 2010 E90 335i N54. FBO, MHD Stg 2+. Any ideas?
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01-20-2019, 08:27 AM	#2
Sam_M Tea wot? 210 Rep 271 Posts Drives: 2011 N55 135i 6MT Join Date: Nov 2016 Location: UK iTrader: (0)	Sounds like a rod bearing to me Last edited by Sam_M; 01-20-2019 at 08:35 AM..
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