See Figures 1 and 2
The computer regulated, Electronic Fuel Injection (EFI) system provides a precise air/fuel mixture ratio for all driving conditions. The fuel injection system is controlled by the Powertrain Control Module (PCM).
For complete explanation of the electrical aspect of the EFI system, refer to elsewhere in this information.
The fuel system consists of the fuel tank, fuel pump, fuel filter, throttle body, fuel injector, fuel tubes and vacuum tubes. The fuel system is kept under a constant pressure of 14.5 psi (100 kPa) for 1984-90 and early 1991 Shadow and Sundance models and 39 psi (265 kPa) for 1991-95 models (except early 1991 Shadow and Sundance). Make sure to relieve the fuel system pressure before servicing any EFI component.