Fuel Injection Supply Manifold

Removal

1. Perform Steps 1 through 4 under Fuel Charging System, Pre-Service Procedures.

2. Remove upper intake manifold (9424) as outlined in Section 03-01A.

3. Remove spring lock coupling retainer clips from fuel inlet and return fittings.

4. Using Spring Lock Coupling Disconnect Tool D87L-9280-A, D87L-9280-B or equivalent, disconnect the inlet and outlet fuel lines from the fuel injection supply manifold (9F792) .

5. Remove fuel pressure regulator bracket retaining bolt.

   NOTE: It may be easier to remove fuel injectors (9F593) with the fuel injection supply manifold as an assembly.

6. Carefully disengage fuel injection supply manifold from fuel injectors and remove fuel injection supply manifold .

7. Use a rocking, side-to-side motion while lifting to remove fuel injectors from cylinder head pockets.
   
   
   
   
   

   Item	Part Number	Description
   1	9D930	Fuel Charging Wiring
   2	9C968	Fuel Pressure Regulator
   3A	N606691-S2	Bolt
   4B	N805117-S8M	Bolt (4 Req'd)
   5	9F593	Fuel Injector
   6	9F792	Fuel Injection Supply Manifold
   A		Tighten to 20-30 Nm (15-22 Lb-Ft)
   B		Tighten to 8-11 Nm (71-97 Lb-In)

Installation

NOTE: When installing fuel injection supply manifold particular attention should be paid to proper fuel injector O-rings seating to ensure that no fuel leaks exist.

1. Push fuel injection supply manifold down to ensure all fuel injector O-rings are fully seated in the fuel injection supply manifold cups and cylinder head pockets.

2. Install retaining bolts while holding fuel injection supply manifold down. Tighten bolts to 8-11 Nm (71-97 lb-in).

3. Install fuel pressure regulator bracket retaining bolt. Tighten to 20-30 Nm (15-22 lb-ft).

4. Install inlet and outlet fuel lines and spring lock couplings as outlined.

5. With fuel charging wiring (9D930) disconnected, turn ignition switch (11572) to the RUN position several times to allow the fuel pump (9350) to pressurize the fuel system.

6. Using a clean towel, check for fuel leaks.

7. Connect fuel charging wiring to fuel injectors .

8. Install upper intake manifold as outlined in Section 03-01A.

9. Run vehicle at idle for two minutes.

10. Turn engine OFF and inspect for fuel leaks.