1.Try giving the bottom of the fuel tank a few whacks with a fllat piece of wood or a rubber mallet while another tries to start the engine. You have a 50/50 shot at getting the pump going again and the vehicle starting. if it starts as a result of the whack then it confirms the bad fuel pump.
2.If the fuel pump did not run or system pressure did not reach specification, locate the fuel pump test connector. The test connector is usually found on the driver's side of the engine compartment (on or near the fender), with a single wire (usually red) leading from the relay to the connector. Using a 10 amp fused jumper wire, apply battery voltage to the test connector in order to energize and run the fuel pump. The pump should run and produce fuel pressure of 58-64 psi (400-440 kPa). If the pump does not run, check the relay and fuel pump wiring.
If the pump pressure was lower than specification, first check for a restricted fuel line, filter or a disconnected fuel pulse dampener (pulsator) and repair/replace, as necessary. If no restrictions can be found, restrict the flexible fuel return line (by gradually pinching it) until the pressure rises above 64 psi (440 kPa), but DO NOT allow pressure to exceed 75 psi (517 kPa). If the fuel pressure rises above specification with the return line restricted, then the pressure regulator is faulty and the CMFI assembly should be replaced. If pressure still does not reach specification, check for a faulty fuel pump, partially disconnected fuel pulse dampener (pulsator), partially restricted pump strainer or an incorrect pump.
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