Fuel System Pressure Release
WARNING:
Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited, resulting in possible personal injury.
Fuel in the fuel system remains under high pressure even when the engine is not running. Before repairing or disconnecting any of the fuel lines or fuel system components, the fuel system pressure must be relieved to prevent accidental spraying of fuel, causing personal injury or a fire hazard.
NOTE:
Fuel Pressure Gauge (T80L-9974-B) is required to perform this procedure. See Figure.
- 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, release fuel pressure from relief valve.
- If fuel pressure gauge is not available, disconnect electrical connector to Inertia Fuel Shutoff (IFS) switch. ON sedans, IFS switch is located behind right trunk liner. See Fig 1. On station wagons, IFS switch is located behind right rear quarter trim panel. See Fig 2. Crank engine for 15 seconds to reduce system pressure. Turn ignition off. Reconnect IFS switch connector.