Quote:
Originally Posted by badazzstroker
why is it supposed to do that.
|
It's been said on another forum that a possible reason for the white smoke is a DOC that is not up to temp yet. When the truck enters the regen cycle and the raw fuel is dumped into the exhaust stroke, it is supposed to hit a hot DOC (the thing in front of the DPF) and ignite, burning the DPF out. If the DOC is not hot enough, the fuel does not ignite and you see it coming out the back.
I've gotten the MOST white smoke when the truck was driven and warmed up right BEFORE it wanted to regen, but shut off (just by chance, NOT during the regen). When its started and driven again, the engine comes up to temp very quickly (since it already was from a previous trip) but the exhaust has had just enough time to cool. The regen starts up and he smoke only lasts for a mile or less.