F 150 4WD V8-4.6L VIN 8 (2010)
Fuel Pressure Release: Service and Repair
Fuel System Pressure Release
All engines
WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component.
Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
WARNING: Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent
accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this
instruction may result in serious personal injury.
WARNING: Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any
fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in
serious personal injury.
WARNING: When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be
ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.
1. Disconnect the battery ground cable. For additional information, refer to Battery.
5.4L (3V) engine
2. Remove the air intake resonator assembly bolt and loosen the clamp. Rotate the air intake resonator assembly upward until it stops.
4.6L (3V) engine
3. Remove the Evaporative Emission (EVAP) purge valve bracket bolt and position the bracket aside.
All engines
4. NOTE: 4.6L (2V) shown, 4.6L (3V) and 5.4L (3V) similar.
Remove the fuel pressure relief valve cap.