If it ran for several minutes after you replaced the fuel pump, then air in the system should have been expunged. But, if you only let it run for a few seconds, then air could be trapped in the fuel lines. Since it started and ran, obviously your firing system is not to blame. I would unhook the fuel line and turn the engine over for a minute or so to make sure the air in the system is gone. Use a can to catch the fuel. If no fuel is being pumped, then your new pump is FUBAR or you have trash in the fuel tank not allowing free flow of gas to the pump. Also, check your fuel filter to make sure it is not plugged up with trash.