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#1 stucav

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Posted 15 September 2011 - 07:47 PM

Within the last 18 months I have had a full new exhaust including rear box, centre exhaust, cat, manifold and gasket.

But I am getting noises from it, when I rev the car, I get a sound like stones are inside hitting the inside of the exhaust and when i first start the car up, it sounds funny.

It failed the MOT in June on emissions and needed a new breather pipe/hose.

Any ideas what is the problem?

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#2 stef123

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Posted 16 September 2011 - 11:35 AM

the rattling sound is probably something loose inside one of the silencers - it could also be the cat starting to break up.

#3 stucav

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Posted 16 September 2011 - 12:44 PM

Thanks for your reply, what could of caused these problems? The car has been lowered (Before i purchased it) would this be the cause i.e catching/scrapping road bumps or pot holes.

Is this a serious issue i.e staff to drive especially long drives?

Any ideas on cost?

#4 stef123

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Posted 16 September 2011 - 12:52 PM

providing whatever is rattling inside the exhaust doesnt shift and block the gases escaping there shouldnt be any damage done.

are you able to have a look/listen under the car with the engine running - if you can determine where its rattling from might help.

I have had my cat break up before and i left it a few weeks until i could afford a new one - no issues. if the car doesnt feel down on power then i personally wouldnt be panicking

Unburnt petrol is one thing that can break the cat up internally as it makes it overheat, also driving through deep water/puddles (casues the steel to rapidly contract and crushes the honeycomb inside)

what year is your car?

#5 stucav

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Posted 16 September 2011 - 01:09 PM

Ok thanks for your help.

I'm hoping to get it checked out in next couple of weeks, as have other issues with it. As I am travelling up to Lake Districit from Kent.

Didn't want anything to happen whilst travelling up/down to there.


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