Tune up

Replaced a new distributor cap and rotor button, new wires, fuel valve, clean throttle body.
ran Seafoam in has tank. Since replacing all that it run like it has burnt valves. It idles so, so, when you put it in gear. It loses power and jerks. Just does not want to go. I am at a loss. I do not know what else to do. Any thing come to mind? Maybe vacuum leak? Fuel pump is two years old. New fuel filter.