Fuel Pressure: Scorpio
- Relieve fuel system pressure. Disconnect fuel pressure regulator fuel return line. Connect Fuel Pressure Gauge (T80L-9974-B) to Schrader vavle on fuel rail.
- Connect a jumper wire to Self-Test connector Black/Red wire. Turn ignition switch to "RUN" position. Connect other end of jumper wire to ground for one minute.
- Fuel pressure should be 43.5 psi (3.0 kg/cm2 ). Immediately after fuel pump shutdown, fuel pressure should be 30 psi (2.0 kg/cm2 ). If fuel pressure is not to specification, check fuel pressure regulator, restricted fuel lines, leaking fuel injectors or malfunctioning fuel pump.