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Home >> Subaru >> 2015 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection Fuel Systems (H4DOTC) >> Intake Manifold >> Installation
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Intake Manifold: Installation

  1. Install the vacuum hose assembly to the cylinder block.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    Fig 1: Locating Cylinder Block Vacuum Hose Assembly
    G09479615Courtesy of SUBARU OF AMERICA, INC.
  2. Install the tumble generator valve assembly to the cylinder head.
    NOTE: Use a new gasket.

    Tightening torque: 

    25 N.m (2.5 kgf-m, 18.4 ft-lb) 

    Fig 2: Locating Intake Manifold Mounting 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 the pipe all the way in before locking the slider.
    • When it is difficult to lock the slider, check that the pipe is fully inserted.
    • Make sure that the quick connector is securely connected.
    NOTE: Connect the quick connector as shown in the figure.
    Fig 3: Connecting Quick Connector
    G09479618Courtesy of SUBARU OF AMERICA, INC.
    Fig 4: Locating Quick Connector
    G09479613Courtesy of SUBARU OF AMERICA, INC.
  4. Install the fuel pipe assembly to the intake manifold.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    Fig 5: Locating Fuel Pipe Assembly Mounting 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 Fuel Pipe Assembly Evaporation Hose
      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 the pipe all the way in before locking the slider.
      • When it is difficult to lock the slider, check that the pipe is fully inserted.
      • Make sure that the quick connector is securely connected.
      NOTE: Connect the quick connector as shown in the figure.
      Fig 7: Connecting Quick Connector
      G09479622Courtesy of SUBARU OF AMERICA, INC.
      Fig 8: Locating Quick Connector
      G09479609Courtesy of SUBARU OF AMERICA, INC.
  6. Install the EGR pipe. < Ref. to INSTALLATION , EGR Pipe. >
  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 kgf-m, 14.0 ft-lb) 

    Fig 10: Identifying Tumble Generator Valve Connector LH And RH
    G09479605Courtesy of SUBARU OF AMERICA, INC.
  10. Connect connectors to the manifold absolute pressure & intake air temperature sensor.
    Fig 11: Locating Manifold Absolute Pressure And 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 Canister Pipe Vacuum Hoses
    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 And Vacuum Hose
    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 Clips
    G09479600Courtesy of SUBARU OF AMERICA, INC.
  15. Connect the brake booster vacuum hose to the intake manifold.
    Fig 16: Locating Brake Booster Vacuum Hose Clip
    G09479599Courtesy of SUBARU OF AMERICA, INC.
  16. Connect the preheater hose (B) to the throttle body, and connect the connector (A) to the throttle body.
    Fig 17: Identifying Preheater Hose Clips
    G09479592Courtesy of SUBARU OF AMERICA, INC.
  17. Connect the PCV hose to the PCV valve.
    Fig 18: Locating PCV Hose Clamp
    G09479597Courtesy of SUBARU OF AMERICA, INC.
  18. Install the intake duct No. 3. < Ref. to INTAKE DUCT NO. 3 , INSTALLATION, Intake Duct. >
  19. Install the intake duct No. 2. < Ref. to INTAKE DUCT NO. 2 , INSTALLATION, Intake Duct. >
  20. Install the intercooler. < Ref. to INSTALLATION , Intercooler. >
  21. Install the air intake duct (rear). < Ref. to INSTALLATION , Air Intake Duct. >
  22. Fill engine coolant. < Ref. to FILLING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant. >
  23. Install the under cover. < Ref. to INSTALLATION , Front Under Cover. >
  24. Lower the vehicle.
  25. Connect the battery ground terminal.
  26. Install the collector cover.
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