FUEL INJECTION (FUEL SYSTEMS)(H4DOTC) > Intake Manifold

INSTALLATION

1. Install the intake manifold onto cylinder heads.

NOTE:

Use a new gasket.

Tightening torque:

25 N·m (2.5 kgf-m, 18.4 ft-lb)

2. Connect the fuel delivery hose, fuel return hose, and evaporation hose.

NOTE:

If fuel hoses or clamps are damaged, replace them with new parts.

(A)

Fuel delivery hose

(B)

Fuel return hose

(C)

Evaporation hose

3. Tighten the hose clamp screw.

Tightening torque:

1.25 N·m (0.1 kgf-m, 0.9 ft-lb)

4. Securely install the engine harness clip (A) to the rocker cover RH.

5. Connect the connector to the ignition coil.

6. Connect the air duct to the secondary air pump, and install the air duct on the rocker cover LH.

Tightening torque:

9 N·m (0.9 kgf-m, 6.6 ft-lb)

7. Connect the connector to oil flow control solenoid valve.

8. Connect the connectors to camshaft position sensor.

9. Connect the connector to the secondary air combination valve.

10. Connect the connector to the knock sensor.

11. Connect the connector to the power steering pump switch.

12. Connect the connector to the engine coolant temperature sensor (A), oil pressure switch (B) and crankshaft position sensor (C).

13. Install the engine harness connector to engine harness bracket, then connect the bulkhead harness connector to the engine harness connector.

• LHD model

• RHD model

14. Connect the air control hose (A) to wastegate actuator, and install the turbocharger to the intake duct.

Tightening torque:

3 N·m (0.3 kgf-m, 2.2 ft-lb)

• Except for WRX-SS model

• WRX-SS model

15. Connect the brake booster vacuum hose.

• LHD model

• RHD model

16. Connect the PCV hose to the rocker cover.

17. Connect the engine coolant hoses to throttle body.

18. Install the intake duct to the throttle body.

Tightening torque:

3 N·m (0.3 kgf-m, 2.2 ft-lb)

19. Attach the bolts which secure the air by-pass pipe and PCV pipe to the intake manifold.

Tightening torque:

6.4 N·m (0.7 kgf-m, 4.7 ft-lb)

20. Connect the vacuum hose to the PCV connector.

21. Install the A/C pressure hoses to A/C compressor.

22. Install the coolant filler tank.

23. Install the generator.

24. Install the intercooler.

25. Install the air intake boot.

Tightening torque:

2.5 N·m (0.3 kgf-m, 1.8 ft-lb)

26. Install the air intake duct.

27. Connect the ground cable to battery.

28. Lift up the vehicle.

29. Install the under cover.

30. Lower the vehicle.

31. Install the V-belt cover.

Tightening torque:

13 N·m (1.3 kgf-m, 9.6 ft-lb)

32. Fill engine coolant.

33. Charge the A/C system with refrigerant.