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What Are The Symptoms Of Clogged Cats?

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Old 02-25-2003, 03:40 PM
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What are the symptoms of clogged cats besides low power? Does it smell any different? I know they glow red after hard driving, but that's kinds hard to see with the heat shield in place.
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Old 02-25-2003, 04:03 PM
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exhaust leaks in front of the main cat? high rpm power, thats about it



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Old 02-25-2003, 04:13 PM
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what about overall crappy power?
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Old 02-25-2003, 04:14 PM
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it will affect power inthe mid range but if you have like a rough idle or something keep looking



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Old 02-25-2003, 04:29 PM
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My old Camaro had it's cat die fast. One day everything was fine, next day it was loud as hell and had no power. Bogged down when trying to accelerate, but loud as hell out the same time. All the gaskets in front of the cat were leaking because of the backpressure.
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Old 02-25-2003, 07:50 PM
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Originally Posted by rotary>piston' date='Feb 25 2003, 01:40 PM
What are the symptoms of clogged cats besides low power? Does it smell any different? I know they glow red after hard driving, but that's kinds hard to see with the heat shield in place.
Like mike said...They will leak from the header or the main cat gasket areas due to backpressure build up.My car was nice and loud with them clogged. Just wanted the noise out the back of the car so I pulled them. The power gain is just a bonus.
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Old 02-25-2003, 07:51 PM
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why would anyone even have their cats?
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Old 02-25-2003, 08:20 PM
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Originally Posted by bigtime' date='Feb 25 2003, 05:51 PM
why would anyone even have their cats?
To keep the smog police off thier tails.
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Old 02-25-2003, 08:55 PM
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Originally Posted by bigtime' date='Feb 25 2003, 05:51 PM
why would anyone even have their cats?
for smog



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Old 02-25-2003, 08:57 PM
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i don't have cats, I asking for a friend's car
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