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Cat failure (Read 295 times)
Ewan
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Cat failure
22. Aug 2011 at 19:10  
I have heard that a missfire or a blown head gasket can wreck cats. Can anyone throw any light on this? How likely is it , and does it need to be a prolonged situation before damage occurs?
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TheBoy
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TBE has an MOT!

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Re: Cat failure
Reply #1 - 22. Aug 2011 at 19:37  
Unburnt fuel can contaminate the cat.
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chrisgixer
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Re: Cat failure
Reply #2 - 22. Aug 2011 at 22:20  
... Hence if the ecu detects a miss fire for too long, on DBW cars certainly, it shuts down the injector on that cylinder.
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