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Home >> Subaru >> 2010 >> Legacy Premium, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Fuel Injection System - Fuel Injection (Fuel Systems) (H4DOTC - 2.5L DOHC Turbo)) >> Intake Manifold >> Removal

Intake Manifold: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Remove the collector cover.
  2. Collect the refrigerant from A/C system. Ref. to PROCEDURE , Refrigerant Recovery Procedure.
  3. Release the fuel pressure. Ref. to RELEASING OF FUEL PRESSURE , PROCEDURE, Fuel.
  4. Disconnect the ground cable from battery.
    Fig 1: Identifying Ground Cable And Battery
    G06648739Courtesy of SUBARU OF AMERICA, INC.
  5. Open the fuel filler lid and remove the fuel filler cap.
  6. Lift up the vehicle.
  7. Remove the under cover. Ref. to REMOVAL , Front Under Cover.
  8. Drain approximately 2.0 l  (2.1 US qt, 1.8 Imp qt) of engine coolant. Ref. to DRAINING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant.
  9. Disconnect the connectors from exhaust oil flow control solenoid valve (A) and exhaust camshaft position sensor (B).
    Fig 2: Identifying Exhaust Oil Flow Control Solenoid Valve Connector And Exhaust Camshaft Position Sensor Connector
    G06648740Courtesy of SUBARU OF AMERICA, INC.
  10. Disconnect the connectors from wastegate control solenoid valve, and remove the clip (A) which secure the engine harness.
    Fig 3: Locating Wastegate Control Solenoid Valve Connectors And Clip
    G06648741Courtesy of SUBARU OF AMERICA, INC.
  11. Lower the vehicle.
  12. Remove the air intake duct. Ref. to REMOVAL , Air Intake Duct.
  13. Remove the intercooler. Ref. to REMOVAL , Intercooler.
  14. Disconnect the A/C pressure hoses from A/C compressor. Ref. to REMOVAL , Hose and Pipe.
  15. Disconnect the vacuum control hose from the PCV valve.
    Fig 4: Locating Vacuum Control Hose From PCV Valve
    G06648742Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the bolts which secure the engine harness and PCV pipe to the intake manifold, and remove the intake duct from the throttle body.
    Fig 5: Locating Bolts And PCV Pipe To Intake Manifold
    G06648731Courtesy of SUBARU OF AMERICA, INC.
  17. Disconnect the preheater hose from throttle body.
    Fig 6: Locating Preheater Hose From Throttle Body
    G06648744Courtesy of SUBARU OF AMERICA, INC.
  18. Disconnect the brake booster vacuum hose.
    Fig 7: Locating Brake Booster Vacuum Hose
    G06648745Courtesy of SUBARU OF AMERICA, INC.
  19. Disconnect the vacuum hose from rocker cover.
    Fig 8: Locating Vacuum Hose From Rocker Cover
    G06648746Courtesy of SUBARU OF AMERICA, INC.
  20. Disconnect the vacuum hose from blow-by pipe, and remove the bolt securing the blow-by pipe to the intake manifold protector RH.
    Fig 9: Locating Vacuum Hose From Blow-By Pipe And Bolt
    G06648747Courtesy of SUBARU OF AMERICA, INC.
  21. Disconnect vacuum hose (A) and vacuum control hose (B) from the PCV pipe.
  22. Remove the nut securing the PCV pipe to the intake manifold protector RH, and move the PCV pipe in the forward direction of the vehicle.
    Fig 10: Locating Nut Securing PCV Pipe To Intake Manifold Protector RH
    G06648748Courtesy of SUBARU OF AMERICA, INC.
  23. Disconnect the bulkhead harness connector from the engine harness connector (brown).
    Fig 11: Locating Bulkhead Harness Connector From Engine Harness Connector
    G06648749Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the bolt securing the bulkhead harness connector bracket, and disconnect the bulkhead harness connector from the engine harness connector (black).
    Fig 12: Locating Bolt Securing Bulkhead Harness Connector Bracket
    G06648750Courtesy of SUBARU OF AMERICA, INC.
  25. Remove the engine harness connector from the engine rear hanger.
    Fig 13: Locating Engine Harness Connector From Engine Rear Hanger
    G06648751Courtesy of SUBARU OF AMERICA, INC.
  26. Disconnect the connectors from the engine coolant temperature sensor (A), oil pressure switch (B) and crankshaft position sensor (C).
    Fig 14: Identifying Engine Coolant Temperature Sensor, Oil Pressure Switch And Crankshaft Position Sensor To Connectors
    G06648265Courtesy of SUBARU OF AMERICA, INC.
  27. Disconnect the connectors from front oxygen (A/F) sensor (A) and rear oxygen sensor (B).
    Fig 15: Identifying Front Oxygen (A/F) Sensor And Rear Oxygen Sensor Connectors
    G06648753Courtesy of SUBARU OF AMERICA, INC.
  28. Remove the clip which secure the generator cord to the intake manifold protector LH.
    Fig 16: Locating Generator Cord To Intake Manifold Protector LH And Clip
    G06648754Courtesy of SUBARU OF AMERICA, INC.
  29. Disconnect the connector from the knock sensor.
    Fig 17: Locating Knock Sensor Connector
    G06648755Courtesy of SUBARU OF AMERICA, INC.
  30. Disconnect the connector from the intake camshaft position sensor.
    Fig 18: Locating Intake Camshaft Position Sensor Connector
    G06648756Courtesy of SUBARU OF AMERICA, INC.
  31. Disconnect the connectors from the intake oil flow control solenoid valve.
    Fig 19: Locating Intake Oil Flow Control Solenoid Valve Connectors
    G06648757Courtesy of SUBARU OF AMERICA, INC.
  32. Disconnect the connector (A) from oil level switch.
  33. Disconnect the connector (B) from ignition coil, and remove the clips (C) and bolt (D) securing the engine harness or oil level switch harness to the rocker cover.
    Fig 20: Identifying Oil Level Switch Connector With Clips And Bolt
    G06648758Courtesy of SUBARU OF AMERICA, INC.
  34. Attach ST to the fuel delivery pipe and push ST in the direction of arrow mark to disconnect the fuel delivery hose.

    ST 42099AE000 QUICK CONNECTOR RELEASE

    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from hoses using a container or cloth.
      Fig 21: Attaching ST To Fuel Delivery Pipe
      G06648759Courtesy of SUBARU OF AMERICA, INC.
  35. Disconnect the fuel return hose using the ST.

    ST 18371AA000 CONNECTOR REMOVER

    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from hoses using a container or cloth.
    1. Attach ST to the fuel return pipe as shown in the figure.
      Fig 22: Attaching ST To Fuel Return Pipe
      G05340084Courtesy of SUBARU OF AMERICA, INC.
    2. Insert the front side of ST into the quick connector.
      Fig 23: Inserting Front Side Of ST Into Quick Connector
      G05340085Courtesy of SUBARU OF AMERICA, INC.
    3. Insert the back side of ST into the quick connector and push ST in the direction of arrow mark to disconnect the fuel return hose.
      Fig 24: Inserting Back Side Of ST Into Quick Connector
      G05340086Courtesy of SUBARU OF AMERICA, INC.
  36. Remove the clip and disconnect the evaporation hose from the fuel pipe.
    Fig 25: Locating Clip And Evaporation Hose From Fuel Pipe
    G06648763Courtesy of SUBARU OF AMERICA, INC.
  37. Remove the intake manifold from cylinder head.
    Fig 26: Locating Bolts And Intake Manifold From Cylinder Head
    G06648764Courtesy of SUBARU OF AMERICA, INC.
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