F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Fuel Pressure Release: Service and Repair
FUEL SYSTEM PRESSURE RELEASE
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 work on the fuel system until the pressure has been released and the engine has cooled. Fuel in the high-pressure fuel system is hot
and under very high pressure. High-pressure fuel may cause cuts and contact with hot fuel may cause burns. Failure to follow these
instructions may result in serious personal injury.
NOTE: This procedure is for releasing the low-pressure fuel system pressure. The high-pressure fuel system cannot be relieved of pressure manually.
The high-pressure fuel system will lose pressure as the engine cools down. The pressure will bleed off after approximately 30 seconds with the key in the
OFF position. Wait for the engine to be cool before servicing the high-pressure fuel system.
1. With the vehicle in NEUTRAL, position it on a hoist.
2. Disconnect both battery ground cables.
3. Remove the Schrader valve cap.
4. NOTE: It may be necessary to remove the degas bottle cap to install the special tool onto the Schrader valve. If the degas bottle cap is removed,
cap off the degas bottle to prevent foreign material from entering the degas bottle.
