Fuel System Pressure Release
WARNING:
Always relieve fuel pressure before disconnecting any fuel injection related component. DO NOT allow fuel to contact engine or electrical components.
NOTE:
On some vehicles, the fuel supply manifold Schrader valve may have been eliminated. If vehicle does not have a Schrader valve, the fuel system pressure release procedure has been revised. See TSB Ford 02-23-3, dated 11/23/2002 for revised fuel pressure release procedure.
- Remove fuel filler cap to release fuel tank pressure. Remove relief valve (Schrader valve) cap. Relief valve is located on fuel supply manifold. Using Fuel Pressure Gauge (T80L-9974-B), release fuel pressure from relief valve.
- If fuel pressure gauge is not available, disconnect electrical connector to Inertia Fuel Shutoff (IFS) switch. IFS switch is located on driver's side "B" pillar. Crank engine for 15 seconds to reduce system pressure. Turn ignition off. Reconnect IFS switch connector.