F 150 4WD V8-4.6L VIN 8 (2010)
Fuel Rail: Service and Repair
Fuel Rail
Fuel Rail
Removal and Installation
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: Always disconnect the battery ground cable at the battery when working on an evaporative emission (EVAP) system or
fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in
serious personal injury.
NOTE: During the repair or installation of new fuel-related components, cap, tape or otherwise appropriately protect all liquid and vapor fuel openings
to prevent the ingress of dirt or other contamination. Remove caps, tape and other protective materials prior to installation.
1. Disconnect the battery ground cable. For additional information, refer to Battery.
2. Disconnect the fuel supply tube quick connect coupling.
3. Disconnect the 8 fuel injector electrical connectors.
4. Remove the 4 fuel rail bolts.
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To install, tighten to 10 Nm (89 lb-in).
5. Remove the fuel rail and fuel injectors as an assembly from the intake manifold.
6. NOTE: The fuel injector clip can be reused if it is not damaged during removal. If the clip is reused, the 2 sides of the clip should be squeezed
back into shape by placing it between index finger and thumb.
Remove the 8 retaining clips and the 8 fuel injectors from the fuel rail.
7. NOTICE: O-ring seals are made of special fuel-resistant material. Fuel will damage ordinary O-ring seals and may cause the fuel system
to leak.
NOTICE: Do not reuse O-ring seals. The removal and installation process may damage the used O-ring seals, and cause the fuel system to
leak.
Remove and discard the 16 fuel injector O-ring seals.
8. To install, reverse the removal procedure.
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Lubricate the 16 new fuel injector O-ring seals with clean engine oil prior to installation.
