OK, here it is: ** I AM NOT A TECH ** just wanted to get that out of the way....

'03 F250 6.0 (crap!) crew cab short bed, all stock.
When giving throttle, almost at every acceleration, it labors like it wont shift and POURS white smoke like crazy!! Cannot get more than 250 miles on a tank of fuel.

I did the HOT SHOT SECRET....kinda improved, for about 2 days. Truck was at shop for a couple weeks and they did..?? um, a bunch of crap, like $3000 worth and it's still a piece of major crap.

I hate this truck.

 

Sounds like a Cummins I worked on Thad shot injectors that destroyed the pistons