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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

How often do CATs plug up?

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Old Oct 9, 2011 | 10:05 PM
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How often do CATs plug up?

How often do folks hear about plugged cats due to soot? If I look down the pipe of a non-DPF truck, it's got a decent coating of soot. Wouldn't this also build-up in a CAT passages and thus reduce its effectiveness not only in reducing emissions but also generating less heat for the DPF?

I guess regens would ultimately burn off any accumulations.

What about those with pre-DPF trucks or those who deleted their DPF?
 
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Old Oct 10, 2011 | 03:14 PM
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I haven't heard of anyone plugging one yet. Although when I got my Spartan, Jeff, on their forum told me that they can eventually plug if you only do a dpf delete like I did. But no problems yet, and like I said, haven't heard of it either.
 
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Old Oct 11, 2011 | 08:49 AM
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I think it's a pretty rare thing. I know most later 7.3L trucks had cats as well as all 6.0s. Never heard of one going bad except in the case of aftermarket programming combined with a DPF delete.
 
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Old Oct 11, 2011 | 09:06 AM
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Only time I've heard of a CAT going bad has been when it fell apart on the inside from age.
 
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Old Oct 13, 2011 | 10:10 PM
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i recently removed my cat which had about 60,000 miles running high tunes with no dpf towing and it looked good. Holding a flashlight behide it you could light with no issues, not sure if this helps but its an observation i recently made
 
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Old Oct 14, 2011 | 02:34 PM
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Originally Posted by SANDDEMON08
i recently removed my cat which had about 60,000 miles running high tunes with no dpf towing and it looked good. Holding a flashlight behide it you could light with no issues, not sure if this helps but its an observation i recently made
that's really good info to have. definately gives a starting point to figuring out how long these things will last. Did you go to a full exhaust system or was there another reason for removal?
 
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