Thank you for using just answer.
When it warms up does the smoke go away?
Is it alot of smoke when pressing the gas?
Ok you are right it is dumping raw fuel.You have a injector or injectors going bad.When
the spool sticks open it will allow raw fuel to be dumped in the cylinder.The only way to
find the bad injector is to scan the truck and do a compression test on it.Or if the truck
has alot of miles you might consider to replace all 8