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Monty-Rob's avatar
Monty-Rob
Explorer
Feb 11, 2016

Excessive white exhaust while driving F450 diesel

Lately I have noticed a lot of white exhaust smoke coming out the tailpipe. Normally when I see warning on dash for cleaning exhaust there is only a little white smoke now it continues for a few minu...
Tow Vehicles
N-Trouble's avatar
N-Trouble
Explorer
Feb 11, 2016
Lots of reports of 2011+ GM Duramax trucks doing this as well. It's unburnt diesel fuel in the DPF that builds up during the regen process. My truck does it occasionally if I am in the middle of a regen and stuck in light traffic for a while, then get on it and its a huge cloud of white smoke.

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