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Re: Knocking sound on uneven road

P

peter y.s pang

Trainee
Joined
27 Aug 2012
Messages
75
Re: Knocking sound on uneven road

Hi, My 993 rear end with knocking sound when running on uneven road. But it don't have any sound when running smooth road and on highway. Checked all heat protection plate all in good condition and fitting tight. The exhaust system all fitting tight. I did renew all control arm 1 year ago.

My question is, Will the knocking sound from the CV axel ? It already over 20 years. Even the rubber dust bellow look ok, Will inside the grease dry up ? Any method to check the CV axel.

Thanks for any input for me to trace such knocking sound.

Peter
 
Could be from any suspension component. Commonest is the arb drop link, followed by the lower wishbone monoball.
I had a knock from a loose adjuster bolt on one of the control arms which had not been torqued up. Wheels off and go round with a pry bar, check for split bushes and tightness of mounting bolts.
 
Depending on where you live, this is a good reason to pay a visit to Center Gravity. They found a few issues on my 993
 
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