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Home >> Subaru >> 2017 >> Crosstrek Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DO) >> Intake Manifold >> Removal
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Intake Manifold: Removal

  1. Release the fuel pressure. Ref. to RELEASING OF FUEL PRESSURE , PROCEDURE, Fuel.
  2. Disconnect the ground cable from battery.
    Fig 1: Disconnecting Ground Cable From Battery
    G08317298Courtesy of SUBARU OF AMERICA, INC.
  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. Lift up the vehicle.
  5. Remove the under cover. Ref. to REMOVAL , Front Under Cover.
  6. Drain approximately 3.0 L (3.2 US qt, 2.6 Imp qt) of coolant. Ref. to DRAINING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant.
  7. Remove the clip (A), and loosen the clamps (B) and (C) securing the air intake boot.
    Fig 2: Air Intake Boot, Clip And Clamps
    G09475465Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the air intake boot from the air cleaner case (rear) and throttle body, and move the air intake boot aside so that it does not interfere with the work.
    Fig 3: Removing Air Intake Boot From Air Cleaner Case (Rear) And Throttle Body
    G09476922Courtesy of SUBARU OF AMERICA, INC.
  9. Disconnect the preheater hose from throttle body.
    Fig 4: Disconnecting Preheater Hose From Throttle Body
    G08315334Courtesy of SUBARU OF AMERICA, INC.
  10. Disconnect the connector (A) from the purge control solenoid valve.
  11. Loosen the bolt (B) which secures the EGR pipe to the intake manifold.
  12. Remove the nut (C) which holds EGR pipe from the water pipe assembly.
    Fig 5: Identifying Purge Control Solenoid Valve Connector, EGR Pipe Mounting Bolts And Nuts
    G08315335Courtesy of SUBARU OF AMERICA, INC.
  13. Disconnect the PCV hose (A) from intake manifold.
  14. Disconnect the connector (B) from manifold absolute pressure sensor.
  15. Disconnect the connector (C) from the throttle position sensor.
    Fig 6: Disconnecting Connector From Throttle Position Sensor
    G08315336Courtesy of SUBARU OF AMERICA, INC.
  16. Disconnect the brake booster vacuum hose from the intake manifold.
    Fig 7: Locating Brake Booster Vacuum Hose From Intake Manifold
    G09475476Courtesy of SUBARU OF AMERICA, INC.
  17. Disconnect the connector from the mass air flow and intake air temperature sensor, and remove the clip (A) securing the bulkhead wiring harness.
    Fig 8: Locating Connector From Mass Air Flow And Intake Air Temperature Sensor
    G08316829Courtesy of SUBARU OF AMERICA, INC.
  18. Remove the air cleaner case (rear) together with the air cleaner element.
    Fig 9: Removing Air Cleaner Case (Rear) With Air Cleaner Element
    G08316830Courtesy of SUBARU OF AMERICA, INC.
  19. Remove the intake manifold protector RH.
    Fig 10: Removing Intake Manifold Protector RH
    G08315340Courtesy of SUBARU OF AMERICA, INC.
  20. 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
    G11583997Courtesy of SUBARU OF AMERICA, INC.
    Fig 12: Locating Quick Connector
    G08315342Courtesy of SUBARU OF AMERICA, INC.
  21. Remove the intake manifold protector LH.
    Fig 13: Locating Intake Manifold Protector LH
    G08315343Courtesy of SUBARU OF AMERICA, INC.
  22. 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 14: Disconnecting Quick Connector
    G11584000Courtesy of SUBARU OF AMERICA, INC.
    Fig 15: Locating Quick Connector
    G08315345Courtesy of SUBARU OF AMERICA, INC.
  23. 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 16: Disconnecting Quick Connector
      G11584002Courtesy of SUBARU OF AMERICA, INC.
      Fig 17: Locating Quick Connector
      G09476943Courtesy of SUBARU OF AMERICA, INC.
    2. Disconnect the evaporation hose from the fuel pipe assembly.
    Fig 18: Locating Evaporation Hose From Fuel Pipe Assembly
    G09475487Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the intake manifold from the tumble generator valve assembly.
    Fig 19: Locating Intake Manifold Bolts
    G09475488Courtesy of SUBARU OF AMERICA, INC.
  25. Remove the engine wiring harness. Ref. to REMOVAL , Engine Wiring Harness.
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