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Home >> Subaru >> 2006 >> Impreza WRX TR >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection (Fuel Systems) (H4DOTC) >> Intake Manifold >> Assembly
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Intake Manifold: Assembly

NOTE: Replace the gasket with a new one.
  1. Install the tumble generator valve assembly to the intake manifold.

    Tightening torque: 

    8.25 N.m (0.84 kgf-m, 6.1 ft-lb) 

    Fig 1: Locating Tumble Generator Valve Assembly Bolts
    G04998320
  2. Install the air intake duct to the intake manifold.

    Tightening torque: 

    19 N.m (1.94 kgf-m, 13.7 ft-lb) 

    Fig 2: Locating Intake Duct
    G04998319
  3. Install the fuel pipe assembly and pressure regulator to the intake manifold.

    Tightening torque: 

    6.4 N.m (0.65 kgf-m, 4.7 ft-lb) 

    Fig 3: Locating Bolts Installing Fuel Pipe Assembly On Intake Manifold
    G04998318
  4. Install the fuel injector pipe LH.
  5. Connect the left side fuel hose LH to fuel injector pipe, and tighten the clamp screw.

    Tightening torque: 

    1.25 N.m (0.13 kgf-m, 0.94 ft-lb) 

    Fig 4: Locating Fuel Hose Clamp
    G04998316
  6. Install the fuel injector pipe RH.
  7. Connect the fuel hose RH to fuel injector pipe, and tighten the clamp screw.

    Tightening torque: 

    1.25 N.m (0.13 kgf-m, 0.94 ft-lb) 

    Fig 5: Locating Clamp Holding Fuel Hose To Fuel Injector Pipe (RH)
    G04998317
  8. Install the engine harness to the intake manifold.
  9. Install the harness bracket which holds the engine harness onto intake manifold.

    Tightening torque: 

    19 N.m (1.94 kgf-m, 13.7 ft-lb) 

    Fig 6: Locating Harness Bracket
    G04998315
  10. Install the fuel injector.
    Fig 7: Holding Fuel Injector
    G04998314
  11. Tighten the bolts which install the fuel injector pipe onto intake manifold.

    Tightening torque: 

    19 N.m (1.94 kgf-m, 13.7 ft-lb) 

    • LH side
      Fig 8: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (LH)
      G04998310
      Fig 9: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (LH)
      G04998311
    • RH side
      Fig 10: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (RH)
      G04998312
      Fig 11: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (RH)
      G04998313
  12. Tighten the two bolts which install the fuel injector pipes on the left side of intake manifold.

    Tightening torque: 

    6.4 N.m (0.65 kgf-m, 4.7 ft-lb) 

    Fig 12: Locating Bolts Holding Fuel Pipes On Left Side Of Intake Manifold
    G04998309
  13. Connect the evaporation hoses to the purge valve.
    NOTE: Connect the evaporation hoses as shown in the figure.
    Fig 13: Positions For Connecting Evaporation Hoses
    G04998333
  14. Connect the evaporation hose and purge valve to the intake manifold.
    Fig 14: Identifying Evaporation Hose And Purge Valve On Intake Manifold
    G04998308
  15. Install the purge control solenoid valve.

    Tightening torque: 

    16 N.m (1.6 kgf-m, 11.6 ft-lb) 

    Fig 15: Locating Purge Control Solenoid Valve Connector
    G04998307
  16. Connect the hoses to the purge control solenoid valve.
    NOTE: Connect the evaporation hoses as shown in the figure.
    Fig 16: Connecting Evaporation Hoses
    G04998336
  17. Connect the connector to the purge control solenoid valve.
    Fig 17: Locating Purge Control Solenoid Valve Connector
    G04998337
  18. Connect the connector to the tumble generator valve sensor.
    Fig 18: Locating Tumble Generator Valve Sensor Connector
    G04998306
  19. Connect the connector to the tumble generator valve actuator.
    Fig 19: Locating Tumble Generator Valve Actuator Connector
    G04998305
  20. Connect the connector to the fuel injector.
    Fig 20: Locating Fuel Injector Connectors
    G04998304
  21. Install the throttle body to the intake manifold.
    NOTE: Replace the gasket with a new one.

    Tightening torque: 

    8 N.m (0.8 kgf-m, 5.8 ft-lb) 

    Fig 21: Locating Bolts Securing Throttle Body To Intake Manifold
    G04998255
  22. Connect the connector to the throttle position sensor (A) and manifold absolute pressure sensor (B).
    Fig 22: Identifying Throttle Position And Manifold Absolute Pressure Sensor
    G04998253
  23. Install the engine ground terminal to the intake manifold.

    Tightening torque: 

    19 N.m (1.94 kgf-m, 13.7 ft-lb) 

    Fig 23: Locating Engine Ground Terminal On Intake Manifold
    G04998300
    Fig 24: Locating Engine Ground Terminal On Intake Manifold
    G04998301
  24. Install the fuel pipe protector RH.

    Tightening torque: 

    19 N.m (1.94 kgf-m, 13.7 ft-lb) 

    Fig 25: Locating Fuel Pipe Protector With Bolts (RH)
    G04998298
  25. Install the fuel pipe protector LH.

    Tightening torque: 

    19 N.m (1.94 kgf-m, 13.7 ft-lb) 

    Fig 26: Locating Fuel Pipe Protector With Bolts (LH)
    G04998299