WE have bought 2 fuel pumps and it still does not seem to work. The pump runs for about 2 seconds then I try to start the car and it will run for less than a second and stall out but will run off starting fluid. Please help me!!!!!!!!!!!!!!!!!!!!!!!!!

we replaced the starter and now the car will turn over but it is like the engine is getting no fuel is there a switch that we need to turn on or what???