Join Date: Oct 2013
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Shuddering and black smoke??
Bought a 05 F250 few months back and just now really have had the chance to drive it.
While going down the highway in OD I will go up a slight rise that requires a bit more power to maintain speed. The truck will start missing and spitting black smoke, the boost pressure also follows the smoke clouds.
My 2 lines of thinking are either its the transmission being a pain and trying to down shift but not completing the shift (if I step on it and force the shift the miss goes away)
Or there some sort of problems around 2k rpm... any ideas or what I should check? thanks