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Home >> Subaru >> 2017 >> Forester 2.5i Premium, Eng CD FB25BA, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DO) >> Intake Manifold Assembly >> Removal
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Intake Manifold Assembly: Removal

  1. Release the fuel pressure. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel>PROCEDURE>RELEASING OF FUEL PRESSURE .
  2. Disconnect the ground terminal from battery sensor. Ref. to NOTE>NOTE>BATTERY .
  3. Open the fuel filler lid and remove the fuel filler cap.
    NOTE: This operation is required to release the inner pressure of the fuel tank.
  4. Drain approximately 3.0 L (3.2 US qt, 2.6 Imp qt) of engine coolant. Ref. to COOLING(H4DO)>Engine Coolant>REPLACEMENT>DRAINING OF ENGINE COOLANT .
  5. Remove the clip (A) from the air intake boot.
  6. Loosen the clamp (B) securing the air cleaner case (rear) to the air intake boot.
  7. Loosen the clamp (C) which secures the throttle body to the air intake boot.
    Fig 1: Identifying Air Intake Boot Clip
    G11263279Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the air intake boot from the throttle body, and place the air intake boot aside so that it does not interfere with the work.
    Fig 2: Removing Air Intake Boot From Throttle Body
    G11263280Courtesy of SUBARU OF AMERICA, INC.
  9. Disconnect the preheater hose from throttle body.
    Fig 3: Locating Preheater Hose From Throttle Body
    G10262114Courtesy of SUBARU OF AMERICA, INC.
  10. Disconnect the PCV hose (A) from intake manifold assembly.
  11. Disconnect the connector (B) from manifold absolute pressure sensor.
  12. Disconnect the connector (C) from throttle body.
    Fig 4: Disconnecting PCV Hose From Intake Manifold Assembly
    G11263286Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the bolt securing the EGR cooler to the EGR control valve.
  14. Loosen the bolts holding the EGR cooler to the cylinder head RH.
    Fig 5: Locating EGR Cooler To Cylinder Head RH With Bolts
    G11263287Courtesy of SUBARU OF AMERICA, INC.
  15. Disconnect the brake booster vacuum hose from the intake manifold.
    Fig 6: Locating Brake Booster Vacuum Hose From Intake Manifold
    G11263288Courtesy of SUBARU OF AMERICA, INC.
  16. Disconnect the connector (A) from the purge control solenoid valve.
  17. Remove the preheater hose from the intake manifold.
    Fig 7: Disconnecting Connector From Purge Control Solenoid Valve
    G11263289Courtesy of SUBARU OF AMERICA, INC.
  18. Disconnect the connector (A) from the mass air flow and intake air temperature sensor, and remove the clip (B) securing the bulkhead wiring harness.
  19. Remove the clip (C), and the air cleaner case (rear) together with the air cleaner element.
    Fig 8: Disconnecting Connector From Mass Air Flow And Intake Air Temperature Sensor
    G11263290Courtesy of SUBARU OF AMERICA, INC.
  20. Disconnect the connector from the EGR control valve.
    Fig 9: Locating Connector From EGR Control Valve
    G11263291Courtesy of SUBARU OF AMERICA, INC.
  21. Remove the intake manifold protector No. 1 RH.
    Fig 10: Locating Intake Manifold Protector No. 1 RH With Bolts
    G10262120Courtesy of SUBARU OF AMERICA, INC.
  22. Remove the clip (A) securing the engine harness to the intake manifold assembly, and disconnect the connector (B) from the tumble generator valve and disconnect the connector (C) from the fuel injector #3.
  23. Disconnect the fuel delivery pipe from the fuel pipe RH.
    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from the pipes using a container or cloth.
    NOTE: Disconnect the quick connector as shown in the figure.
    Fig 11: Disconnecting Quick Connector
    G11263293Courtesy of SUBARU OF AMERICA, INC.
    Fig 12: Locating Quick Connector
    G11263294Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the intake manifold protector No. 1 LH.
    Fig 13: Locating Intake Manifold Protector No. 1 LH With Bolts
    G11263295Courtesy of SUBARU OF AMERICA, INC.
  25. Remove the clip which secures the engine harness to the intake manifold protector No. 3.
    Fig 14: Locating Engine Harness To Intake Manifold Protector No. 3 With Clip
    G11263296Courtesy of SUBARU OF AMERICA, INC.
  26. Disconnect the connector (A) from the tumble generator valve, and disconnect the connector (B) from the fuel injector #4.
  27. Disconnect the fuel delivery pipe from the fuel pipe LH.
    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from the pipes using a container or cloth.
    NOTE: Disconnect the quick connector as shown in the figure.
    Fig 15: Disconnecting Quick Connector
    G11263297Courtesy of SUBARU OF AMERICA, INC.
    Fig 16: Locating Quick Connector
    G11263298Courtesy of SUBARU OF AMERICA, INC.
  28. Disconnect the fuel delivery tube and evaporation hose.
    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from the tubes using a container or cloth.
    1. Disconnect the quick connector on the fuel delivery tube from the fuel pipe assembly, and remove the clip (A) securing the fuel delivery tube.
      NOTE: Disconnect the quick connector as shown in the figure.
      Fig 17: Disconnecting Quick Connector
      G11263299Courtesy of SUBARU OF AMERICA, INC.
      Fig 18: Locating Quick Connector
      G11263300Courtesy of SUBARU OF AMERICA, INC.
    2. Disconnect the evaporation hose from the fuel pipe assembly.
      Fig 19: Locating Evaporation Hose From Fuel Pipe Assembly
      G11263301Courtesy of SUBARU OF AMERICA, INC.
  29. Remove the intake manifold assembly from the cylinder head together with the intake manifold protector No. 2 and the intake manifold protector No. 3.
Fig 20: Locating Intake Manifold Assembly Bolts
G11263302Courtesy of SUBARU OF AMERICA, INC.
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