Help diagnosing a sound. (2008 335xi coupe 6mt)

willbeblack · 12-08-2019, 11:32 PM

Hello, I am new to BMWs(n54), but I am not new to cars. The car does have a stage 3 clutch with a Mfactory flywheel. It had a lot of chatter so I raised the idle to 900rpm. This pretty much got rid of the chatter noise I was hearing, but allowed me to become aware of a new sound. I really only hear this noise in neutral and never hear it when driving.

At first I assumed the worst and thought it was rod knock. Although the more videos I listen to the more I realize how drastically different this sounds than those videos. If anyone could give me any ideas I would really appreciate it.

type-dRew · 12-09-2019, 08:50 AM

Are you pushing the clutch pedal down in this video?

willbeblack · 12-09-2019, 11:49 AM

Quote:

Originally Posted by type-dRew

Are you pushing the clutch pedal down in this video?

Clutch pedal doesn't affect the noise.

Jklad · 12-10-2019, 07:59 AM

Can you hear it from outside the car? With the hood
Popped?

willbeblack · 12-10-2019, 12:53 PM

Quote:

Originally Posted by Jklad

Can you hear it from outside the car? With the hood
Popped?

Yes I can

12-08-2019, 11:32 PM	#1
willbeblack New Member 0 Rep 5 Posts Drives: BMW 335xi Join Date: Dec 2019 Location: CA iTrader: (0)	Help diagnosing a sound. (2008 335xi coupe 6mt) Hello, I am new to BMWs(n54), but I am not new to cars. The car does have a stage 3 clutch with a Mfactory flywheel. It had a lot of chatter so I raised the idle to 900rpm. This pretty much got rid of the chatter noise I was hearing, but allowed me to become aware of a new sound. I really only hear this noise in neutral and never hear it when driving. At first I assumed the worst and thought it was rod knock. Although the more videos I listen to the more I realize how drastically different this sounds than those videos. If anyone could give me any ideas I would really appreciate it.
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12-09-2019, 08:50 AM	#2
type-dRew Major 641 Rep 1,245 Posts Drives: 2009 335i xDrive Join Date: Feb 2019 Location: Newport MI iTrader: (0)	Are you pushing the clutch pedal down in this video? __________________ 2009 335i xDrive AT / 177k+ miles PSP 750ic / Fuel-It! Stage 1 / BMS CP / Sutphin Tuning / RFP E50 11.61 @ 117.5 New setup; Covid 19Ts on RFP 93 + ARM inlets, dp, VTT cp and PSP outlets
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12-10-2019, 07:59 AM	#4
Jklad Lieutenant Colonel 421 Rep 1,643 Posts Drives: 2007 335i Coupe Join Date: Nov 2010 Location: Palatine, IL iTrader: (0)	Can you hear it from outside the car? With the hood Popped? __________________ 2007 E92 335i MT
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