after i replaced all my gaskets, and got the motor back in the truck, it doesnt like to accelerate. 4th and 5th gear are mostly useless now, and whenever i give it gas the truck jerks forward, as if i'm stomping on and off the gas. there's a massive loss of power, and i have to downshift a gear lower than usual for hills. (say usually i could take a hill in 4th, now i have to in 3rd or maybe even second).
anyone have any ideas?
replaced plugs, wires, and fuel filter.
ran seafoam through fuel tank.