Knocking-sound (Right/Rear)

Porker · 30-07-2012, 08:57 AM

Hi all,

My CSL produces a knocking sound at the backside on the right. It occurs whenever I take a medium to hard lefthand turn, or drive through potholes with the right rear wheel.

It might be worth to note that my car has PSS10 fitted, maybe it's a faulty Bilstein-damper?

**Mark CSL** · 30-07-2012, 10:27 AM

Hi
The standard rear springs brake also have you checked the pads as this can do that noise if you have a big brake kit.

The bottom suspension bar did this on my csl and was replaced under warranty
Its the one from the bottom of the hub to the Diff mount and is a round alloy bar.

Hope this helps

Porker · 30-07-2012, 10:34 AM

Quote:

Originally Posted by Mark CSL

Hi
The standard rear springs brake also have you checked the pads as this can do that noise if you have a big brake kit.

The bottom suspension bar did this on my csl and was replaced under warranty
Its the one from the bottom of the hub to the Diff mount and is a round alloy bar.

Hope this helps

Hi Mark, thanks for the input.

I have AP-racing, but I doubt the pads can produce such a heavy knock? Springs are part of the PSS10-kit, so I assume they should be less prone to breaking? I'll have it checked together with the suspension bar.

Thanks!

**shimmy** · 30-07-2012, 10:41 AM

Rear bottom bush, not easy to get out!

**cantfind1** · 30-07-2012, 11:46 AM

did you change your rear top suspension mount when you put the Billys on or did you use the standard BMW rear top mount.....

If its original will prob be that....

Porker · 30-07-2012, 01:49 PM

Quote:

Originally Posted by cantfind1

did you change your rear top suspension mount when you put the Billys on or did you use the standard BMW rear top mount.....

If its original will prob be that....

Spoke to my technician, those have indeed been changed, according to him it should indeed be the rear bottom bush.

I'll have it changed right away.

Funkster · 01-08-2012, 11:16 AM

Quote:

Originally Posted by shimmy

Rear bottom bush, not easy to get out!

I find getting in the bush is the hard bit...... Never a problem getting out

Porker · 01-08-2012, 11:29 AM

Just to make sure they change the correct part, could anyone give a partn° of the suspect bush?

Thanks

**CraigMillwardCroft** · 01-08-2012, 10:02 PM

Quote:

Originally Posted by Funkster

I find getting in the bush is the hard bit...... Never a problem getting out

More lube required

30-07-2012, 08:57 AM	#1
Porker S3 - On the open road Join Date: Jun 2012 Posts: 98 Casino cash: $1793	Knocking-sound (Right/Rear) Hi all, My CSL produces a knocking sound at the backside on the right. It occurs whenever I take a medium to hard lefthand turn, or drive through potholes with the right rear wheel. It might be worth to note that my car has PSS10 fitted, maybe it's a faulty Bilstein-damper?

30-07-2012, 10:27 AM	#2
Mark CSL CSL Register Uber-poster! Join Date: Sep 2007 Location: Scotland Posts: 8,777 Casino cash: $42229	Hi The standard rear springs brake also have you checked the pads as this can do that noise if you have a big brake kit. The bottom suspension bar did this on my csl and was replaced under warranty Its the one from the bottom of the hub to the Diff mount and is a round alloy bar. Hope this helps __________________ www.procarkits.co.uk

30-07-2012, 10:41 AM	#4
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	Rear bottom bush, not easy to get out! __________________ .

30-07-2012, 11:46 AM	#5
cantfind1 S5, Sport Off, DSC M-track Join Date: Oct 2009 Location: Sydney Australia Posts: 675 Casino cash: $6490	did you change your rear top suspension mount when you put the Billys on or did you use the standard BMW rear top mount..... If its original will prob be that....

01-08-2012, 11:29 AM	#8
Porker S3 - On the open road Join Date: Jun 2012 Posts: 98 Casino cash: $1793	Just to make sure they change the correct part, could anyone give a partn° of the suspect bush? Thanks