Intake Manifold Removal and Installation
Engine MechanicalIntake Manifold and Exhaust System
Intake Manifold Removal and Installation
Intake Manifold (Part 1):
Intake Manifold (Part 2):
Removal
1. Remove the engine cover.
2. Remove the breather pipe (A), then remove the intake air duct (B).
3. Remove the positive crankcase ventilation (PCV) hose (A) and the brake booster vacuum hose (B).
4. Remove the evaporative emission (EVAP) canister purge hose (A) and the water bypass hoses (B), then plug the water bypass hoses.
5. Disconnect the following engine wire harness connectors and remove the wire harness clamps from the intake manifold:
^ Intake air temperature (IAT) sensor connector ('07 model)
^ Throttle actuator connector
^ Manifold absolute pressure (MAP) sensor connector
^ Evaporative emission (EVAP) canister purge valve connector
^ Intake manifold tuning (IMT) solenoid valve connector ('07 model J35A7 engine)
6. Remove the upper cover mounting bolts and nuts sequentially in three steps.
7. Remove the intake manifold mounting bolts and nuts sequentially in three steps.
8. Remove the intake manifold.
NOTE: Do not screw and unscrew the 6 mm bolts securing the upper intake manifold and the lower intake manifold.
Installation
1. Install the intake manifold. Tighten the bolts and nuts sequentially in three steps. Always use a new intake manifold gasket.
2. Install the upper cover. Tighten the bolts and nuts sequentially in three steps. Always use a new gasket.
3. Connect the following engine wire harness connectors, and install the wire harness clamps to the intake manifold:
^ Intake air temperature (IAT) sensor connector ('07 model)
^ Throttle actuator connector
^ Manifold absolute pressure (MAP) sensor connector
^ Evaporative emission (EVAP) canister purge valve connector
^ Intake manifold tuning (IMT) valve actuator connector ('07 model J35A7 engine)
4. Install the EVAP canister purge hose (A) and the water bypass hoses (B).
5. Install the positive crankcase ventilation (PCV) hose (A) and the brake booster vacuum hose (B).
6. Install the intake air duct (A), then install the breather pipe (B).
7. Clean up any spilled engine coolant.
8. After installation, check that all tubes, hoses, and connectors are installed correctly.
9. Install the engine cover.
10. Refill the radiator with engine coolant, and bleed air from the cooling system with the heater valve open.