I have a 2013 and I've noticed that when pulling out on the highway in the mornings that my truck blows a pretty good amount of white smoke for at least 2 miles. Is this normal for a non-deleted truck? My 6.0 did this when it had injector issues but it was straight-piped.

I hooked up autoenginuity to the truck and noticed that the DPF load percentage was at 77%. I thought the truck goes in to active regen at 2.47%? The truck has been down on power and 6th gear is virtually useless unless going down hill.

 

Is it white smoke or just tail pipe steam?
White smoke typically equals coolant, which when cold typically means head gasket has gone...

Has your truck consumed any coolant? If so, definitely worth taking to the dealer.

 

should be able to tell easily if it smells like coolant or raw fuel...

 

I'd certainly say normal if no coolant loss.

 

As the others said, if coolant is great then it's probably steam.
Mine creates quite a cloud behind me on cool but high moisture mornings and it's gone in a half mile since I have to jump on a 55 MPH highway.

If you want to test it, start it one morning and let it idle for about two minutes.
Then have someone keep the RPM's around 1,200 for another minute or so (unless you have high idle then turn that on).
That's about when the steam will really become strong and you'll be able to differentiate if it's steam or an actual issue.
Or drive it a few hundred yards and back (heats up more quickly) then have someone hold the RPMs.
I have 1,400 RPM high idle so after a minute or so on a cold morning the steam is pouring out of there in the driveway for at least a minute.

 

I like kyper live in a humid area. On a cold morning mine will blow steam out of pipe a good ways. Coolant level remains the same. Normal.

 

My truck definitely does the same thing, especially if I get on it in the morning. The white smoke you see is ASH coming out of the tailpipe. Think about it, the Filter does catch the black soot, but what about the actually AIR pressure? It still has to go somewhere. Hope this helps, also check your coolant like everybody said. Best of luck!

 

Cold is relative Paul

20130120_090513.mp4 Video by darren323232 | Photobucket

 

Thanks for the responses. Coolant level is good. Having been a 6.0 owner for a number of years, I get a little concerned with white smoke

 

The smoke may be normal but this paragraph is not.

 

True. There should not be a loss of power when close or during an active regeneration which begins at or after 2.66 usually.

 

A guy I work with bought a 2011 Chevy a couple years ago and it blew white smoke nonstop. Local dealer had it in the shop long time. GM finally bought it back if he would do another Duramax deal. He did and is all happy. He said it was something to do with DEF.

 

Update: The DPF is now at 25% load - inferred after a regen a few days ago. The DPF sensor voltage is at .50v if that means anything to the techs that may read this.

 

Even here in San Diego I get steam out of the exhaust on a "cold", humid morning.



(I'm originally from Seattle, so my definition of cold is very different than the SoCal natives. Down here, temps in the 40's is considered cold.)

 

Its Mr Bubbles Hard at work inside the exhaust.lmbo