Fuel Injector: Service and Repair
REMOVALCAUTION: Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel related components. Highly flammable vapors are always present and may ignite. Failure to follow these instructions may result in personal injury.
1. Remove the air cleaner assembly outlet tube.
2. Perform the Fuel Pressure Release Procedure.
3. Remove the upper intake manifold.
4. Disconnect the six electrical connectors from the fuel injectors and position the harness to one side.
5. Disconnect the vacuum line from the fuel pressure regulator.
6. Disconnect the Intake Manifold Runner Control (IMRC) operating rod.
7. Disconnect the fuel supply and return hoses from the fuel injection supply manifold.
8. Remove the fuel injection supply manifold.
NOTE: The fuel injection supply manifold and fuel injectors are removed as an assembly.
9. Remove the fuel injectors from the supply manifold.
INSTALLATION
CAUTION: Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel related components. Highly flammable vapors are always present and may ignite. Failure to follow these instructions may result in personal injury.
1. Install new fuel injector O-ring seals.
^ Lubricate the fuel injector O-ring seals with clean engine oil, XO-10W30-QSP or DSP or equivalent meeting Ford specification WSS-M2C-153-F, to aid installation.
CAUTION: Never use silicone grease. It will clog the injectors.
2. To install, reverse the removal procedure.
^ When installing the six fuel injectors begin at the front of the engine and install sequentially working toward the rear.
^ Check for fuel leaks.