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Model specific boards => Golf mk4 => Topic started by: MickeyC on 06 May 2011, 19:02

Title: Knocking from rear (not bushes)
Post by: MickeyC on 06 May 2011, 19:02

I have just spent over £200 on parts and labour having rear poly bushes fitted to try and eliminate the knocking im getting from the rear when hitting even the smallest bump

it sounds like its deffo coming from the rear passenger side somewhere, the noise is like a marble inside a tin can getting shook around and is annoying especially when driving with the windows down.

what else could cause such a horrible noise ?  :undecided:

thanks  :rolleyes:

Title: Re: Knocking from rear (not bushes)
Post by: richw911 on 06 May 2011, 19:20

Exhaust mounts or broken exhaust bracket?  :undecided:

Title: Re: Knocking from rear (not bushes)
Post by: MickeyC on 06 May 2011, 21:50

ill jack the car up tomorrow and have a look 

im ready to book in for an MOT so trying to get everything fixed so it doesnt fail  :grin:

Title: Re: Knocking from rear (not bushes)
Post by: Wayne on 06 May 2011, 22:01

Is the exhaust knocking the beam maybe.

Title: Re: Knocking from rear (not bushes)
Post by: stevelfc on 06 May 2011, 22:40

broken rear coil spring , exhaust rattle , heat shield

Title: Re: Knocking from rear (not bushes)
Post by: Big Tone on 07 May 2011, 00:18

I have similar, top mounts?

Title: Re: Knocking from rear (not bushes)
Post by: houston on 08 May 2011, 14:58

rear wheel bearing? knackered brake caliper? twisted brake disc shield?

is it all the time or only when cornering, accelerating? did the garage not spot owt when they fitted the bushes?

Title: Re: Knocking from rear (not bushes)
Post by: pauly288 on 24 August 2011, 15:33

Hi

Im having the same problem being described here. Took the car to an exhaust place and they said the middle box was rattling around a lot. They re-mounted it and its much better (no rattle when car is idling) but im still getting a knocking sound like a bushing is gone. Had another mechanic check everything when getting a service last week and he said bushings are all good but theres still some play in the exhaust box.

The back box on my car is a Scorpion. think the middle box is also a performance model, i bought the car with it on and wasnt necessarily looking for a performance exhause but it was already on there. If i was to get a more "standard" middle box fitted do any of you guys think it would fix the problem and also would i notice much of a power loss? Does the main extra power come from the middle or back box??

Thanks

Paul

Title: Re: Knocking from rear (not bushes)
Post by: Dave_IOW on 24 August 2011, 17:30

any real power gains are to be had from increased downpipe bore, and catalytic converter.. eg. sports cat or removal of it completely, i think..