Grand Cherokee 4WD L6-242 4.0L VIN S MFI (1993)
Intake Manifold: Service and Repair
Installation
INSTALLATION
NOTE: If the manifold is being replaced, ensure all the fitting, etc. are transferred to the replacement manifold.
1. Install a new engine exhaust/intake manifold gasket over the alignment dowels on the cylinder head.
Fig. 6 Engine Exhaust/Intake Manifold
2. Position the engine exhaust manifold to the cylinder head. Install fastener # 3 and finger tighten at this time Fig. 6.
3. Install intake manifold on the cylinder head dowels.
4. Install washers and fasteners # 1, 2, 4, 5, 8, 9, 10 and 11 Fig. 6.
5. Install washers and fasteners # 6 and 7 Fig. 6.
6. Tighten the fasteners in sequence and to the specified torque Fig. 6.
a
Fasteners # 1 through 5, tighten to 33 Nm (24 ft. lbs.) torque.
b
Fasteners # 6 and 7, tighten to 31 Nm (23 ft. lbs.) torque.
c
Fasteners # 8 through 11, tighten to 33 N.m (24 ft. lbs.) torque.
7. Install the fuel rail and injectors.
8. Install the power steering pump and bracket to the intake manifold. Tighten the belt to specification.
9. Install the fuel system supply and return lines to the fuel rail assembly. Before connecting the fuel system lines to the fuel rail replace the 0-rings in
the quick-connect fuel line couplings. Refer to Powertrain Management/Fuel Delivery and Air Induction/Fuel Supply Line/Service and
Repair for the proper procedure.
10. Connect all electrical connections on the intake manifold.
11. Connect the vacuum connector on the intake manifold and install it in the bracket.
12. Install throttle cable, vehicle speed control cable (if equipped).
13. Install the transmission line pressure cable (if equipped).
14. Install air cleaner assembly
15. Connect air inlet hose to the throttle plate assembly.
16. Raise the vehicle on a side mounted hoist.
17. Use a new engine exhaust manifold seal. Connect the exhaust pipe to the engine exhaust manifold.
18. Lower the vehicle.
19. Connect the negative cable to the battery
20. Start the engine and check for leaks.
