I think cat has failed, can i remove insides put it back on ?

2000 Ford Escort 1.6
Car: Ford Escort
Year: 2000
Variant: 1.6
Categories: Running Rough, Starting & Power Loss
i think cat might have failed as i had lots of rattleing and loss of power , can i just smash the insides out and put it back on ? Could it be anything other than cat ? Clutch is ok ? Will it defo fail mot ?, will it work same as decat pipe? Should i just buy 2nd hand cat? Any suggestions much appreciated thanks
Problem added: Dec 27, 2011 (12 years ago)
You can remove the honey comb but just watch some of its not gone down the system causing a blockage,Obviously it will not pass a cat. test but at least you will know for sure this is the cause.Another cat. will be required to pass mot.
Answered Dec 27, 2011 (12 years ago)

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