Check the fuel pump for voltage. If there is no voltage, it could be the pump relay. Swap another relay of the same type with the fuel pump relay. If that doesn't work, then the pump itself is probably bad. If the fuel pump is getting voltage, fuel filter and fuel pressure regulator are the next things to check. Usually a dirty filter won't completely restrict the flow of fuel. You can check to see if fuel is reaching the pressure regulator by disconnecting the inlet fuel line and cranking the engine.
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