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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DOTC) >> Intake Manifold >> Installation
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Intake Manifold: Installation

  1. Install the vacuum hose assembly to the water pipe assembly.

    Tightening torque: 

    6.4 N.m (0.7 kg-fm, 4.7 ft-lb)

    Fig 1: Locating Water Pipe Assembly Bolts
    G09479615Courtesy of SUBARU OF AMERICA, INC.
  2. Install the intake manifold and tumble generator valve assembly to the air intake adapter.
    NOTE: Use a new gasket.

    Tightening torque: 

    25 N.m (2.5 kg-fm, 18.4 ft-lb)

    Fig 2: Locating Intake Manifold Bolts
    G09479614Courtesy of SUBARU OF AMERICA, INC.
  3. Connect the fuel delivery pipe (A) and vacuum hose (B) to the fuel pipe assembly.
    CAUTION:
    • Check that there is no damage or dust on the quick connector. If necessary, clean the seal surface of the pipe.
    • When connecting the quick connector, make sure to insert it all the way in before locking the slider.
    • When it is difficult to lock the slider, check that the connector is fully inserted.
    • After locking the slider, check that the quick connector is securely connected.
    NOTE: Connect the quick connector as shown in the figure.
    Fig 3: Connecting Quick Connector
    G11264870Courtesy of SUBARU OF AMERICA, INC.
    Fig 4: Identifying Fuel Delivery Pipe And Vacuum Hose
    G09479613Courtesy of SUBARU OF AMERICA, INC.
  4. Install the fuel pipe assembly to the intake manifold.

    Tightening torque: 

    6.4 N.m (0.7 kg-fm, 4.7 ft-lb)

    Fig 5: Locating Fuel Pipe Assembly Bolt
    G09479611Courtesy of SUBARU OF AMERICA, INC.
  5. Connect the fuel delivery tube and evaporation hose.
    1. Connect the evaporation hose to fuel pipe assembly.
      Fig 6: Locating Evaporation Hose Of Fuel Pipe Assembly
      G09479610Courtesy of SUBARU OF AMERICA, INC.
    2. Connect the connector on the fuel delivery tube to the fuel pipe assembly, and secure the fuel delivery tube using clip (A).
    CAUTION:
    • Check that there is no damage or dust on the quick connector. If necessary, clean the seal surface of the pipe.
    • When connecting the quick connector, make sure to insert it all the way in before locking the slider.
    • When it is difficult to lock the slider, check that the connector is fully inserted.
    • After locking the slider, check that the quick connector is securely connected.
    NOTE: Connect the quick connector as shown in the figure.
    Fig 7: Identifying Connecting Quick Connector
    G11264874Courtesy of SUBARU OF AMERICA, INC.
    Fig 8: Identifying Fuel Delivery Tube Clip
    G10266683Courtesy of SUBARU OF AMERICA, INC.
  6. Install the EGR pipe. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>EGR Pipe>INSTALLATION .
  7. Secure the engine harness to the intake manifold using clip.
    Fig 9: Locating Engine Harness Clip
    G09479606Courtesy of SUBARU OF AMERICA, INC.
  8. Connect the connector (B) to the tumble generator valve RH.
  9. Connect the connector (A) to the tumble generator valve LH, and secure the fuel pipe protector to the intake manifold.

    Tightening torque: 

    19 N.m (1.9 kg-fm, 14.0 ft-lb)

    Fig 10: Locating Fuel Pipe Protector Bolt
    G09479605Courtesy of SUBARU OF AMERICA, INC.
  10. Connect connectors to the manifold absolute pressure & intake air temperature sensor.
    Fig 11: Locating Intake Air Temperature Sensor Connector
    G09479604Courtesy of SUBARU OF AMERICA, INC.
  11. Connect the connector to the purge control solenoid valve.
    Fig 12: Locating Purge Control Solenoid Valve Connector
    G09479603Courtesy of SUBARU OF AMERICA, INC.
  12. Connect the vacuum hose to the canister pipe.
    Fig 13: Locating Vacuum Hoses From Canister Pipe
    G09479602Courtesy of SUBARU OF AMERICA, INC.
  13. Connect the vacuum control hose and vacuum hose to the vacuum pipe assembly.
    Fig 14: Locating Vacuum Control Hose Clip
    G09479601Courtesy of SUBARU OF AMERICA, INC.
  14. Secure the PCV pipe and generator cord to the intake manifold using the clip.
    Fig 15: Locating PCV Pipe And Generator Cord Clips
    G09479600Courtesy of SUBARU OF AMERICA, INC.
  15. Install the brake booster vacuum hose to the clip (D).
    NOTE: If the clip is removed from the intake manifold, install the clip to the position of alignment mark of intake manifold.
  16. Connect sections (A) and (B) of the brake booster vacuum hose to the brake vacuum pump and intake manifold, and install the brake booster vacuum hose to the clip (C).
    Fig 16: Identifying Brake Booster Vacuum Hose Clip
    G09480199Courtesy of SUBARU OF AMERICA, INC.
  17. Connect the preheater hose (B) to the throttle body, and connect the connector (A) to the throttle body.
    Fig 17: Identifying Connector And Preheater Hose
    G09479592Courtesy of SUBARU OF AMERICA, INC.
  18. Connect the PCV hose to the PCV valve.
    Fig 18: Locating PCV Hose Clamp
    G09480039Courtesy of SUBARU OF AMERICA, INC.
  19. Install the intake duct No. 3. Ref. to INTAKE (INDUCTION) (H4DOTC)>Intake Duct>INSTALLATION>INTAKE DUCT NO. 3.
  20. Install the intake duct No. 2. Ref. to INTAKE (INDUCTION) (H4DOTC)>Intake Duct>INSTALLATION>INTAKE DUCT NO. 2.
  21. Install the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>Intercooler>INSTALLATION .
  22. Fill engine coolant. Ref. to COOLING(H4DOTC)>Engine Coolant>REPLACEMENT>FILLING OF ENGINE COOLANT .
  23. Install the under cover. Ref. to EXTERIOR/INTERIOR TRIM>Front Under Cover>INSTALLATION .
  24. Lower the vehicle.
  25. Connect the battery ground terminal.
  26. Install the collector cover.
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