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Home >> Subaru >> 2008 >> Impreza Outback Sport, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4SO) >> Intake Manifold >> Installation

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) 

    Fig 1: Locating Intake Manifold Bolts
    G05659394Courtesy of SUBARU OF AMERICA, INC.
  2. Connect the fuel delivery hose and evaporation hose to the fuel pipe. <Ref. to INSTALLATION , Fuel Delivery and Evaporation Lines. >
    NOTE: If fuel hoses or clamps are damaged, replace them with new parts.
  3. Install the EGR pipe to intake manifold.

    Tightening torque: 

    34 N.m (3.4 kgf-m, 24.6 ft-lb) 

    Fig 2: Identifying EGR Pipe
    G05332711Courtesy of SUBARU OF AMERICA, INC.
  4. Connect the following connectors.
    1. Front oxygen (A/F) sensor connector
    2. Rear oxygen sensor connector
    3. Engine harness connectors
  5. Connect the connectors to camshaft position sensor.
    Fig 3: Identifying Camshaft Position Sensor
    G04997339Courtesy of SUBARU OF AMERICA, INC.
  6. Connect the connector to the power steering pump switch (A).
  7. Connect the connector to the oil pressure switch (B).
    Fig 4: Identifying Oil Pressure Switch
    G05659390Courtesy of SUBARU OF AMERICA, INC.
  8. Connect the connector to crankshaft position sensor.
    Fig 5: Identifying Crankshaft Position Sensor
    G04997337Courtesy of SUBARU OF AMERICA, INC.
  9. Connect the knock sensor connector.
    Fig 6: Identifying Knock Sensor Connector
    G05659388Courtesy of SUBARU OF AMERICA, INC.
  10. Connect the connector to engine coolant temperature sensor.
    Fig 7: Identifying Engine Coolant Temperature Sensor
    G04997335Courtesy of SUBARU OF AMERICA, INC.
  11. Connect the PCV hose (A) to intake manifold.
  12. Connect the engine harness connectors (B) to bulkhead harness connectors.
    Fig 8: Identifying Engine Harness Connectors
    G05659386Courtesy of SUBARU OF AMERICA, INC.
  13. Connect the brake booster vacuum hose (A).
    Fig 9: Identifying Brake Booster Vacuum Hose
    G04997333Courtesy of SUBARU OF AMERICA, INC.
  14. Connect the engine coolant hoses (A) to throttle body.
    Fig 10: Identifying Engine Coolant Hoses
    G04997332Courtesy of SUBARU OF AMERICA, INC.
  15. Connect the spark plug cords to spark plugs.
  16. Install the generator. <Ref. to INSTALLATION , Generator.>
  17. Install the air cleaner case and air intake chamber. <Ref. to INSTALLATION , Air Cleaner Case.> <Ref. to INSTALLATION , Air Intake Chamber.>
  18. Install the fuse of fuel pump relay to the main fuse box.
  19. Connect the battery ground cable to battery.
Fig 11: Disconnecting Ground Cable From Battery
G05019586Courtesy of SUBARU OF AMERICA, INC.
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