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Home >> Subaru >> 2011 >> Legacy GT Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection Fuel Systems (H4DOTC) >> Intake Manifold >> Disassembly

Intake Manifold: Disassembly

  1. Remove the intake manifold protector RH from intake manifold.
    Fig 1: Locating Intake Manifold Protector RH And Intake Manifold
    G06648788Courtesy of SUBARU OF AMERICA, INC.
  2. Disconnect front oxygen (A/F) sensor connector (A) and rear oxygen sensor connector (B) from the intake manifold protector LH, and also remove clip (C) which holds the engine harness.
    Fig 2: Identifying Front Oxygen (A/F) Sensor Connector (A), Rear Oxygen Sensor Connector And Intake Manifold Protector
    G06648789Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the engine ground terminal from the intake manifold protector LH, and remove the intake manifold protector LH from the intake manifold.
    Fig 3: Locating Bolts And Intake Manifold Protector LH
    G06648790Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the filter assembly.
    Fig 4: Removing Filter Assembly
    G06648791Courtesy of SUBARU OF AMERICA, INC.
  5. Disconnect the vacuum hose from the intake manifold and fuel delivery pipe.
    Fig 5: Locating Intake Manifold And Fuel Delivery Pipe Vacuum Hose
    G06648792Courtesy of SUBARU OF AMERICA, INC.
  6. Disconnect the connector from the manifold absolute pressure sensor, and remove the solenoid valve bracket assembly from the intake manifold.
    Fig 6: Locating Manifold Absolute Pressure Sensor Connector And Mounting Bolt
    G06648793Courtesy of SUBARU OF AMERICA, INC.
  7. Disconnect the connectors from the purge control solenoid valves 1 and 2.
    Fig 7: Locating Purge Control Solenoid Valves Connectors
    G06648794Courtesy of SUBARU OF AMERICA, INC.
  8. Disconnect the connectors from the throttle position sensor.
    Fig 8: Locating Throttle Position Sensor Connector
    G06648795Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the throttle body from the intake manifold.
    Fig 9: Locating Throttle Body Intake Manifold Mounting Bolts
    G06648796Courtesy of SUBARU OF AMERICA, INC.
  10. Disconnect the connector from the fuel injector and tumble generator valve assembly.
    Fig 10: Locating Fuel Injector Connector
    G06648797Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the brake booster vacuum hose from the clip (A), and remove PCV pipe (B) and engine harness (C) from the intake manifold.
    Fig 11: Locating Brake Booster Vacuum Hose, PCV Pipe And Engine Harness Mounting Bolt
    G06648798Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the bolts which secure the fuel delivery pipe assembly to the intake manifold, and disconnect the pressure regulator vacuum hose from the intake manifold.
    Fig 12: Locating Fuel Delivery Pipe Assembly Mounting Bolts
    G06648799Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the bolts which hold fuel pipe onto intake manifold.
    Fig 13: Locating Fuel Pipe Mounting Bolts
    G06648800Courtesy of SUBARU OF AMERICA, INC.
  14. Remove the fuel injector.
    Fig 14: Removing Fuel Injector
    G06648801Courtesy of SUBARU OF AMERICA, INC.
  15. Disconnect vacuum hose (A), vacuum control hose (B) and brake booster vacuum hose (C) from the intake manifold.
    Fig 15: Identifying Vacuum Hose, Vacuum Control Hose And Brake Booster Vacuum Hose
    G06648802Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the bolts which secure the fuel delivery pipe to the intake manifold, loosen the clamps which hold the fuel hose to the fuel delivery pipe, and remove the fuel delivery pipe and fuel pipe.
    Fig 16: Locating Fuel Delivery Pipe Mounting Bolts
    G06648803Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the nipple from the intake manifold. (except for model with integrated plate)
    Fig 17: Locating Intake Manifold Nipple (Except For Model With Integrated Plate)
    G06648804Courtesy of SUBARU OF AMERICA, INC.
  18. Remove the nipple from the intake manifold. (model with integrated plate)
    Fig 18: Locating Intake Manifold Nipple (Model With Integrated Plate)
    G07910710Courtesy of SUBARU OF AMERICA, INC.
  19. Remove the tumble generator valve assembly from the intake manifold.
    Fig 19: Locating Tumble Generator Valve Assembly Mounting Bolts
    G06648805Courtesy of SUBARU OF AMERICA, INC.