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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 10-14-2013, 08:29 PM   #1 (permalink)
Mt7
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Cat delete

Hello everyone I'm new here and have a ? About 3 weeks ago I did a cat delete 2006 6.0 Since I did that it started blowing white smoke idle only. But not all the time. Egr valve not wet just dry with soot on it no coolant loss or power loss. Rev up a little smoke quits. Just wondering if the cat delete would cause anything like this?
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Old 10-14-2013, 11:47 PM   #2 (permalink)
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Wouldn't think it would cause that... I have mine deleted also as well as the muffler...
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Old 10-15-2013, 02:42 AM   #3 (permalink)
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Has anyone got better mileage from a cat delete?
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Old 10-15-2013, 07:14 AM   #4 (permalink)
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Originally Posted by Mt7 View Post
Hello everyone I'm new here and have a ? About 3 weeks ago I did a cat delete 2006 6.0 Since I did that it started blowing white smoke idle only. But not all the time. Egr valve not wet just dry with soot on it no coolant loss or power loss. Rev up a little smoke quits. Just wondering if the cat delete would cause anything like this?
What are the temperatures during start-up?? Where are you located?


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Has anyone got better mileage from a cat delete?
More street cred yes. MPGs..not really.
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Old 10-15-2013, 09:03 AM   #5 (permalink)
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Has anyone got better mileage from a cat delete?
did mine long long time ago hoping for better mileage,I'd have to think it would help some, but it is so little I can't tell......maybe .2 to .4 MPG better than before,but that could also be to different driving habits.....
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Old 10-15-2013, 09:14 AM   #6 (permalink)
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South Alamama. Temp rarley gets to the freezing point?
Also is there anyway to if the egr valve itself is bad?
Thanks
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Old 10-15-2013, 09:35 AM   #7 (permalink)
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I've got 4" straight exhaust (no cat/muffler) on mine and it does the exact same thing. But its very clear faint greyish white smoke. It smells only like strong rich diesel exhaust. I would imagine this is entirely normal since there is no restriction whatsoever ( especially cat being gone) on the exhaust, and being a diesel. If it smells like coolant then you have a problem, but from what I've heard from numerous sources, I believe its typical on a diesel to have atleast some smoke being straight piped. Of course, it also could be running rich, hence the reason guys with tuners click em on and blow thick black smoke due to injectors dumping way more fuel in the cylinder.
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