Lower Intake Manifold

REMOVAL





Fig. 44

1. Disconnect negative cable from auxiliary jumper terminal (Fig. 44).

WARNING: RELEASE FUEL SYSTEM PRESSURE BEFORE SERVICING FUEL SYSTEM COMPONENTS. SERVICE VEHICLES IN WELL VENTILATED AREAS AND AVOID IGNITION SOURCES. NEVER SMOKE WHILE SERVICING THE VEHICLE.

2. Release fuel system pressure.

WARNING: WRAP SHOP TOWELS AROUND HOSE TO CATCH ANY GASOLINE SPILLAGE.

3. Disconnect fuel supply tube from rail.
4. Remove upper intake manifold.
5. Disconnect electrical connectors from fuel injectors.





Fig. 45

6. Remove bolts holding fuel rail (Fig. 45).





Fig. 46

7. Lift fuel rail off engine. There are spacers under each fuel rail bolt (Fig. 46).





Fig. 47

8. Remove lower intake manifold attaching bolts. Remove intake manifold (Fig. 47).

INSTALLATION
1. Install new intake manifold gaskets (Fig. 47).
2. Install intake manifold, spring washers and nuts (Fig. 47).





Fig. 48

3. Tighten the intake manifold mounting nuts (Fig. 48) one bank after the other by using the following procedures:
- Tighten nuts "R" to 6.4 Nm (56 in. lbs.)
- Tighten nuts "L" to 21 Nm (185 in. lbs.)
- Tighten nuts "R" to 21 Nm (185 in. lbs.)
- Tighten nuts "L" again to 21 Nm (185 in. lbs.)
- Tighten nuts "R" again to 21 Nm (185 in. lbs.)
4. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
5. Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place. Tighten fuel rail bolts to 12 Nm (8 ft. lbs.).
6. Attach electrical connectors to fuel injectors.
7. Connect fuel supply tube to fuel rail.
8. Install upper intake manifold.
9. Connect negative cable to auxiliary jumper terminal.