Fuel Injector: Service and Repair

REMOVAL
1. Disconnect battery ground cable.

NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the strategy.

2. Remove fuel tank filler cap and release fuel tank pressure.
3. Perform fuel pressure release.
4. Remove upper intake manifold.






5. Remove fuel injection supply manifold with fuel injectors.






6. Remove the fuel injectors from fuel injection supply manifold by rocking fuel injector from side-to-side while pulling up gently.
7. Inspect the fuel injector O-rings (two per fuel injector) for signs of deterioration and replace as required.






8. Inspect fuel injector end cap and body for signs of dirt and deterioration and replace as required.

INSTALLATION
1. Lubricate two new O-rings lightly with clean engine oil meeting Ford specification WSS-M2C153-F.

CAUTION: Never use silicone grease on fuel injector O-rings. It will clog the injectors.

2. Lightly push and twist fuel injectors into fuel injection supply manifold.
3. Install fuel injection supply manifold with fuel injectors as described.
4. Install upper intake manifold as described.
5. Perform Post-Service Procedures. Post-Service Procedures