Engine surges

To 2carpros, I have been refurbishing my 1986 Toyota Supra with a non-turbo 3.0 engine and standard transmission. This vehicle has been setting for 5 years. I have replaced theses items:fuel pump, fuel filter, fuel pump relay, all injector seals and grommets, throttle sensor, intake gaskets, vaccum hoses, distributor cap, ignition rotor, spark plugs and spark plug wires. I have cleaned fuel tank, emptied all fuel lines, check for proper fireing order and proper distributor positioning.I have a surgeing engine when you give it gas it will also cut out when gas is given, but at idle it run smooth.I am at a loss as to what my next step is in resolve of this problem with surgeing. Youe responce in this issue will be greatly appreciated. Thank You Rolando