Random black smoke stock truck - Diesel Bombers



6.7 Liter Dodge Cummins 07.5-12 Discussion of 6.7 Liter Dodge Cummins Diesels

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Old 07-13-2013, 10:28 AM
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Default Random black smoke stock truck

Hey guys so the other day I noticed a cloud of black smoke behind me while I'm driving on the highway it lasts about 10 seconds and goes away for 20 or so miles. Seems like if I'm idling for awhile and I get on it it just dumps black smoke. It has a tiny surge to it when it happens. BTW truck is all stock and is an 07 6.7 megacab drw.

I just changed the oil, fuel, and air filter also cleaned the MAF and did a ccv delete.

Last edited by rokinrubi; 07-13-2013 at 10:38 AM.
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Old 07-14-2013, 05:59 PM
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Probly just that dpf cleaning out once in awhile.
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Old 07-14-2013, 06:08 PM
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Here is a video... its smoking a LOT now..

http://s230.photobucket.com/user/tgillil/media/VID_20130714_144241_848.mp4.html
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Old 07-15-2013, 01:22 AM
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You may have an issue with the dpf system, you need to get that looked at.
It may be plugged, needs removed and baked out.
When was the last time the dpf went through a regen cycle?
as for the surge, it sounds like the dpf system may be full and about to put the motor into a limp mode.

Last edited by 97cummins; 07-15-2013 at 01:25 AM.
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Old 07-15-2013, 06:54 AM
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Can you undo the CCV delete and see if it goes away? How many miles are on the truck?
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Old 07-15-2013, 12:54 PM
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I've never seen it go into a regen. Its never had any kind of warnings or anything. I plan on getting a new ccv filter and change it back. The truck has 185k on it.
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Old 07-15-2013, 09:05 PM
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Sounds like a cracked dpf my buddies kinda did this
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Old 07-15-2013, 11:23 PM
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That's what I'm thinking. But why does a crack cause it to have lots of smoke?
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Old 07-16-2013, 03:42 AM
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Because the fuel injected into the dpf is getting past the filtering material. But if you've never noticed the dpf doing a regen, i'm willing to say the filter needs cleaned or the filter is shot.
You should also think about a dpf delete,depending on the emmisions regs in your county and state.
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Old 07-16-2013, 04:27 AM
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That's what I figured. I'm in Alabama so no emissions. I already ordered an egr and dpf delete with a Smarty Jr tuner. Hoping it will fix it so I can start loving my truck again.
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