[petty]

Well, when fuel pump doesn't deliver adequate pressure and volume to your engine, it may not run properly. Low fuel pressure can cause hard starting, a rough idle, misfiring, hesitation and stalling. No fuel pressure will prevent the engine from starting, or will cause the engine to quit running if the fuel pump fails while driving. Take a visit here for diagnosting it, aa1car.com/library/fuel_pump_diagnose.htm.