Fuel Pump
The fuel pump used in this system is a positive displacement, roller vane immersible pump with a permanent magnet electric motor. The fuel is drawn in through a filter sock and pushed through the electric motor to the outlet. The pump contains 2 check valves. One valve is used to relieve internal fuel pump pressure and regulate maximum pump output. The other check valve located near the pump outlet, restricts fuel movement in either direction when the pump is not operational. Voltage to operate the pump is supplied through the automatic shutdown relay.
The Shelby turbocharged models have 2 fuel pumps. One pump is mounted in the fuel tank and the other is mounted outside the tank.
The multi-point fuel injection system is under a constant pressure of about 55 psi (3.8 kg/cm2 ). Before servicing the fuel tank, fuel pump, fuel lines, fuel filter or fuel components of the fuel rail the fuel pressure must be released.