Cruze

Intake Manifold Replacement - 1.6L LDE and LXV

1. Open the hood.
2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
4. Drain the cooling system. Refer to Cooling System Draining and Filling .



5. Remove the 2 intake manifold brace bolts (2, 3).
6. Remove and disconnect the wiring harness plug of the heated oxygen sensor 1.
7. Remove the intake manifold brace (1).
8. Lower the vehicle by its full height.



9. Disconnect wiring harness plug.
10. Disconnect the pipes from the evaporative emission canister purge solenoid valve (1).
11. Remove the evaporative emission canister purge solenoid valve (1) and the rubber mounting from the intake manifold (2).
12. Remove the positive crankcase ventilation tube. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .
13. Remove the throttle body assembly. Refer to Throttle Body Assembly Replacement .
14. Disconnect the manifold absolute pressure sensor wiring harness plug. Refer to Manifold Absolute Pressure Sensor Replacement .
15. Remove the engine management wiring harness and the fuel injectors wiring harness.



16. Remove the 2 evaporative emission canister purge solenoid valve bracket bolts (2).
17. Remove the evaporative emission canister purge solenoid valve bracket (1) from the intake manifold (7).
18. Remove the 2 multiport fuel injection fuel rail bolts (3).
19. Remove the multiport fuel injection fuel rail (4) and the fuel injectors (5) from the intake manifold (7).
20. Remove the 4 multiport fuel injector seals (6).
21. Remove the manifold absolute pressure sensor. Refer to Manifold Absolute Pressure Sensor Replacement .



22. Disconnect the booster vacuum pipe (1) from the intake manifold.



23. Remove the 7 intake manifold bolts (1).
24. Remove the intake manifold (2).

Clean and Inspect the intake manifold. Refer to Intake Manifold Cleaning and Inspection .

1. Clean the sealing surfaces.
2. Install the NEW gasket.

Caution: Refer to Fastener Caution in the Preface section.




3. Install the intake manifold (2) and the 7 intake manifold bolts (1) and tighten to 20 N·m (15 lb ft).



4. Connect the booster vacuum pipe (1) to the intake manifold.
5. Install the manifold absolute pressure sensor. Refer to Manifold Absolute Pressure Sensor Replacement .



6. Install the 4 multiport fuel injector seals (6).
7. Install the multiport fuel injection fuel rail (4) and the fuel injectors (5) to the intake manifold (7).
8. Install the 2 multiport fuel injection fuel rail bolts and tighten to 8 N·m (71 lb in).
9. Install the evaporative emission canister purge solenoid valve bracket (1) to the intake manifold (7).
10. Install the 2 evaporative emission canister purge solenoid valve bracket bolts (2) and tighten to 8 N·m (71 lb in).
11. Install the engine management wiring harness.
12. Connect the manifold absolute pressure sensor wiring harness plug. Refer to Manifold Absolute Pressure Sensor Replacement .
13. Install the throttle body assembly. Refer to Throttle Body Assembly Replacement .
14. Install the positive crankcase ventilation tube. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .



15. Install the evaporative emission canister purge solenoid valve (1) and the rubber mounting to the intake manifold (2).
16. Connect the pipes to the evaporative emission canister purge solenoid valve (1).
17. Connect the wiring harness plug.
18. Raise the vehicle.



19. Install the intake manifold brace (1).
20. Install and disconnect the wiring harness plug of the heated oxygen sensor 1.
21. Install the 2 intake manifold brace bolts (2, 3) and tighten to 8 N·m (71 lb in)
22. Lower the vehicle.
23. Fill the cooling system. Refer to Cooling System Draining and Filling .
24. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
25. Close the hood.