Mark VIII V8-4.6L DOHC (1996)
Fuel Rail: Service and Repair
Fuel Supply Manifold And Fuel Injector View
REMOVAL
1. Perform fuel charging system pre-service and fuel pressure release procedures. See: Service and Repair/Pre-Service Procedures
2. Remove air cleaner outlet tube and engine air resonator.
3. Disconnect vacuum line from fuel pressure regulator and power brake booster.
4. Remove spring lock coupling retainer clip from fuel supply and return fittings.
NOTE: The following items should be noted when service is required.
-
Use specified tool or equivalent.
-
Inspect for missing or damaged O-rings.
-
Use the specified fuel resistant (Brown) O-rings.
-
Lubricate the O-ring with clean engine oil.
-
Make sure that the fitting is locked.
5. Using Spring Lock Coupling Disconnect Tool D87L-9280-A (3/8 in) or D87L-9280-B (1/2 inch). Disconnect the fuel supply and return hoses
from the fuel injection supply manifold.
6. Remove ten fuel injection supply manifold retaining bolts.
NOTE: It may be easier to remove fuel injectors with the fuel injector supply manifold as an assembly.
7. Use a rocking, side-to-side motion while lifting to remove fuel injectors from fuel injection supply manifold. Carefully disengage fuel injection
supply manifold from fuel injectors and remove fuel injection supply manifold.
INSTALLATION
CAUTION: When installing fuel injection supply manifold, pay particular attention to proper seating of the fuel injector O-rings to make sure
that no fuel leaks exist.
1. Push fuel injection supply manifold down to make sure all fuel injector O-rings are fully seated in the fuel injection supply manifold cups and
lower intake manifolds.
2. Install retaining bolts while holding down fuel injection supply manifold. Tighten bolts to 8-12 Nm (71-106 lb in).
3. Install inlet and outlet fuel lines at spring lock coupling.
4. Connect vacuum line to fuel pressure regulator and power brake booster.
5. Connect fuel charging wiring.
6. Install intake air resonator and cleaner outlet tube.
