Why does your powerstroke 6.0 smoke puffs of smoke when accelarating?

Answer 1

If the truck only emits black smoke at the beginning of acceleration and then clears up you are just experiencing normal turbo lag, nothing to worry about. This causes the fuel mixture to be richer to the point that there is raw fuel in the exhaust, which is seen as black smoke. As soon as the turbo "spools up" and forces enough air into the combustion chamber to lean out the mixture this should clear up. If it does not your fuel mixture is too rich, this can be caused by "turning up" the fuel injectors to increase power without a corresponding turbo upgrade, clogged air cleaner, etc. If the smoke is white, the opposite is true, the A/F ratio is too lean, i.e. air in fuel system, bad injection pump, or again incorrect tuning. Either way, a large amount of smoke needs to be corrected or serious engine damage could result. Without a problem such as oil consumption (blue smoke) this should be the only colors of smoke you see under acceleration