Over the past six plus months I have been noticing that my truck is smoking more and more at start up. Its dark grey/black in color. Its now to the point where it is a fairly significant amount, and it will continue to smoke at idle until the motor reaches operating temp (it smokes enough that I can see it floating by the truck if I stop at a light). I don't have any of the typical bad injector symptoms such as hard start, rough idle, or any white smoke. I have been noticing that I have a fairly significant bog that occurs when I accelerate hard - it will run hard to about 2000 rpm, then kinda fall on its face. The two may be unrelated, but I'm kinda wondering if my turbo is functioning?? Any thoughts?

 

could be the nozzles going bad, are egt's a little higher then normal

 

Maybe a MAP sensor too. The turbo might explain higher load condition problems, but idle and low speed / load conditions don't require boost so I would look at fuel delivery and / or sensors.

 

the dark smoke is unburnt fuel which could mean dripping nozzles