I think it would be the silencer wadding. My Fiesta cat broke up and I never got anything through the exhaust...it just caught fire!
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Adam
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The back box is rusting out inside allowing the fibre packing to come out. I'd change the back box asap.
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If the baffle/sound proofing is starting to come away,it will gradually block the pipe,and cause running problems as well as sound
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Steve
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Certainly sounds like the damping material from the back box working its way out, but don't discount the possibility that someone has stuffed something up your exhaust'for a laugh'....
Graeme
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Years ago, I was barrelling down the motorway when there was an almighty bang from under the car, I pulled to the hard shoulder and nearly had a heart attack as I saw blonde hair on the floor coming from under the back of the car, I got down and saw the back box had split open and this hair was coming out of that. Phew! I too never knew it was in there.
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Sorry for any typos Im very long sited
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Two skins on a silencer ,In between two is sound buffer,it assists in reducing engine sounds,the pipes internal with holes in are to disperse the sound in different directions But with a plate in front to reflect these sounds back,on reflection these sounds counteract the original sound making the exhaust very much less noisy than it was or would be.if the casing has rusted to the point this buffer material is coming out of exhaust tailpipe enough rust would have built up to start causing a problem,even though it has not been noticed as yet
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Steve
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