F 250 2WD Super Duty V8-5.4L (2008)
Fuel Pressure: Testing and Inspection
FUEL SYSTEM PRESSURE TEST
Special Tool(s)
Special Tool(s)
WARNING:
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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.
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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.
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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.
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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. Release the fuel system pressure.
2. Disconnect the battery ground cable.
3. Disconnect the fuel supply line-to-fuel rail spring lock coupling.
4. Install the special tools in line between the fuel supply line and fuel rail.
5. NOTE: The fuel pump (FP) module electrical connector was disconnected during the fuel system pressure release.
Connect the FP module electrical connector.
6. Connect the battery ground cable.
7. NOTE: It may take more than one key cycle to pressurize the fuel system.
Cycle the ignition key and wait 3 seconds to pressurize the fuel system. Check for leaks before starting the engine.
