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

Expect Haze Until Break In? Really?

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Old Dec 17, 2007 | 10:58 PM
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Default Expect Haze Until Break In? Really?

I test drove a couple 6.7's at the dealership the other day, both with less than 10 miles. After a couple miles they both were hazing blue at idle for a minute or so. The service man said that it was normal blow-by that would occur until the engine broke in.

That right? All of ya'll see that?
 
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Old Dec 18, 2007 | 11:59 AM
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that does not sound normal, maybe the dealer doesn't know too much, or there is something weired about those new motors.
 
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Old Dec 18, 2007 | 03:34 PM
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Sounds like Stealership BS to me, a 12V maybe, a 6.7 with all the emissions crap, I would say no.
 
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Old Dec 19, 2007 | 12:54 AM
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It's not the black smoke that is germane to the DPF, it's a light blue haze like what would be caused by low combustion temps or burning oil. I guess it could be a EGR valve returning too much and lowering combustion temperatures a lot, otherwise I don't know what it could be. The excuse he gave doesn't sound too off the wall.

At least two did it, so we'll see.
 
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Old Dec 19, 2007 | 08:02 AM
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Part of the new emissions crap!

Hey Begle! When did you move out of SoCal?
 
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Old Dec 20, 2007 | 08:21 AM
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I moved to Phoenix last Summer to attend ASU.

So you say that it's the EGR acting up? Does it always do this or should it stop after a few thousand miles?
 
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Old Dec 20, 2007 | 10:11 AM
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We have a bunch of them at work, and I have never seen this....One has about 5000miles on it, and you can run your hand inside the tail pipe and not get any soot on your hand....kinda weird for a diesel. Sounds like a story, but hey who knows??? I will be getting one early in the new year, but have only driven a few so far, wasnt looking for smoke, but sure didnt notice any either!
 
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Old Dec 20, 2007 | 12:57 PM
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Originally Posted by Begle1
I test drove a couple 6.7's at the dealership the other day, both with less than 10 miles. After a couple miles they both were hazing blue at idle for a minute or so. The service man said that it was normal blow-by that would occur until the engine broke in.

That right? All of ya'll see that?
Well I'm not expert on the new Dodges but I would assume that the haze has to do with the coating on the DPF and with the heat of the exhaust its just burning it off....it should go away, thats how my 6.4 was when I first got it
 
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Old Dec 20, 2007 | 02:05 PM
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I was thinking it might be some sort of coating too, but I couldn't think of what would be coated. I wasn't thinking about a coating in the DPF or cat... I can buy that.
 

Last edited by Begle1; Dec 20, 2007 at 02:09 PM.
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Old Jan 9, 2008 | 09:53 PM
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Mine done that for the first two tanks. I took it back in and the Tech told me it was the emissions **** getting all warmed up and working. Now it doesnt do it at all. thanks Rick
 
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