Changed timimg belt car starts up quickly but shakes vigurously when on drive but stopped doesnt have power on the take off even if i push the gas pedal all the way down takes a while to pick up speed. Stalls when needing to stop.

What is your question?

Timing belt was just changed gas in vehicle was like oil car had been sitting for over a year mechanic drained tank re fueled it and did gas treatment replaced spark plugs and wires did oil change replaced air filter. Car starts right up but once set in gear starts sputtering and has no power. Car makes sputtering sounds and shakes and jerks.