i was wondering if anyone can help when i start my truck i believe its black smoke but it smokes all the time even at a red light i can see the smoke pass me by is these common but it still feel that it runs great and still get pretty good mpg do i have a problem somewhere it has about 106,000 miles thanks 4 your help

I had the same problem. Same miles as well (about). I changed the fuel filter, and that helped a little.

I had the same problem. Same miles as well (about). I changed the fuel filter, and that helped a little.I I just changed it about 800 miles ago