triciens Posted March 4, 2016 Share Posted March 4, 2016 Hi all My 08 Z has a pretty loud clunking when going at low speeds over uneven road surfaces. From reading around it seems like this is a common problem but not easy to diagnose. The noise sounds like it's coming from directly below the driver or passenger seat. It doesn't seem to be coming from one side more than the other but it's difficult to tell. The clunking is pretty loud and continues even when braking (does that rule out the banana bar?). I took it to the garage today and they couldn't find anything wrong with it. The man had it up on a ramp and was prising different bits with a crowbar but couldn't find the problem. Both front bushes were replaced quite recently as car had a knocking then, and that fixed that. But now this new knocking... Here's a video of the noise. You might need to turn the volume up a bit... Does anyone have any ideas? Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted March 4, 2016 Share Posted March 4, 2016 Possibly compression rod bushings or ball joints. Have you tried running the car under the same conditions with the drop links disconnected and tied up out the way ? Quote Link to comment Share on other sites More sharing options...
triciens Posted March 4, 2016 Author Share Posted March 4, 2016 No, is that something an inexperienced person could do? Not even sure what they look like! Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted March 4, 2016 Share Posted March 4, 2016 The drop links are part of the suspension and are bolted to the end of the anti roll bar. Very easy to disconnect and tie up out the way, (5 minute job) however I sense a lack of mechanical knowledge, so may be a plan just to ask the garage to do it for you. However remember that the issue may be compression rod ball joints or bushings. Quote Link to comment Share on other sites More sharing options...
triciens Posted March 4, 2016 Author Share Posted March 4, 2016 Looking at my receipts and it was the anti roll bar links that were recently replaced, not the bushes. So that rules that out. I've just been for another drive and with left foot braking and keeping the speed steady the noise disappears. So that would suggest the compression arm ball joints? In which case I'd have to replace the entire arm. Hard to tell if it's the left or right side but if pushed I'd say left. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted March 4, 2016 Share Posted March 4, 2016 Good to hear that you are making progress. New and pre owned compression rods are in stock and good to go same/next day. just drop me a PM if I can help further. Alex. Quote Link to comment Share on other sites More sharing options...
ATTAK Z Posted March 4, 2016 Share Posted March 4, 2016 B A N A N A. B A R D e f f o 2 Quote Link to comment Share on other sites More sharing options...
GT Driver Posted March 8, 2016 Share Posted March 8, 2016 B A N A N A. B A R D e f f o I always wondered, if there is no obvious play / wear in the bush itself from applying a pry bar, how does one conclude whether it's the bush or the ball joint? Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted March 8, 2016 Share Posted March 8, 2016 B A N A N A. B A R D e f f o I always wondered, if there is no obvious play / wear in the bush itself from applying a pry bar, how does one conclude whether it's the bush or the ball joint? If it is compression rod bushing failure then that will be obvious and the compression rod will be bouncing off the chassis bracing. There will be no obvious visual failure of the compression rod ball joint if it is worn and knocking. 1 Quote Link to comment Share on other sites More sharing options...
newkid Posted March 8, 2016 Share Posted March 8, 2016 replace the bush .....fairly cheap to do ....if the knock continues ...replace the ball joint/arm.... Sent from my SM-G925F using Tapatalk Quote Link to comment Share on other sites More sharing options...
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