I picked up a 06 dirt cheap because of white smoke and rough running. Truck had been sitting so I changed fuel filter. White smoke and rough idle went away. Now when I start truck and let idle it runs fine and barely a haze at idle. Put it in drive and get 1/4 mile down the road and the white smokes starts bellowing. haven't hooked it up to a good scanner yet to determine whether or not the injectors are shot just looking for some opinions. Thanks