Electric pump........ Pump ground wire to frame. Pump power wire connect to the solenoid, large terminal that sends voltage to the starter/gen. That way your fuel pump will only operate when the accel pedal is pushed..
How much fuel pressure does it have? You need a electric fuel pump with 2 lbs of pressure, 2 - 4 PSI maximum. If it's a low pressure pump the needle and seat are sticking or bad or there's dirt in the carburetor.