my truck is cutting out while driving down freeway and puffs out a little white smoke and a lot of black smoke and this is with the truck stock when i pull up to a stop light it will cutt out and almost die then sometims it will run fine just started this . the whoel fuel system was replaced a year ago by my dealer the truck would die and could not get it to start back so they just replaced the whole thing and billed my insurance 9,800

 

check for codes, and check for water in fuel