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Home >> Subaru >> 2014 >> Impreza WRX STI Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (STI) >> Intake Manifold >> Removal

Intake Manifold: Removal

  1. Remove the V-belt covers.
    Fig 1: Locating V-Belt Cover
    G08538631Courtesy of SUBARU OF AMERICA, INC.
  2. Collect the refrigerant from A/C system. < Refer to PROCEDURE , Refrigerant Recovery Procedure. >
  3. Release the fuel pressure. < Refer to RELEASING OF FUEL PRESSURE , PROCEDURE, Fuel. >
    Fig 2: Disconnecting Ground Cable From Battery
    G08538632Courtesy of SUBARU OF AMERICA, INC.
  4. Disconnect the ground cable from battery.
  5. Open the fuel filler lid and remove the fuel filler cap.
  6. Lift up the vehicle.
  7. Remove the under cover. < Refer to REMOVAL , Front Under Cover. >
  8. Drain approximately 3.0 L (3.2 US qt, 2.6 Imp qt) of coolant. < Refer to DRAINING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant. >
  9. Remove the air intake duct. < Refer to REMOVAL , Air Intake Duct. >
  10. Remove the air intake boot.
    Fig 3: Locating Air Intake Boot
    G08538633Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the intercooler. < Refer to REMOVAL , Intercooler. >
  12. Remove the generator. < Refer to REMOVAL , Generator. >
  13. Remove the coolant filler tank. < Refer to REMOVAL , Coolant Filler Tank. >
  14. Disconnect the A/C pressure hoses from A/C compressor. < Refer to REMOVAL , Hose and Pipe. >
  15. Disconnect the engine coolant hose from throttle body.
    Fig 4: Locating Engine Coolant Hose Clamp
    G08538634Courtesy of SUBARU OF AMERICA, INC.
  16. Disconnect the brake booster vacuum hose (A) and pressure regulator vacuum hose (B) from the intake manifold.
    Fig 5: Identifying Brake Booster And Pressure Regulator Vacuum Hose
    G08538635Courtesy of SUBARU OF AMERICA, INC.
  17. Disconnect the connector from the PCV hose assembly A.
    Fig 6: Locating PCV Hose Assembly Connector
    G08538636Courtesy of SUBARU OF AMERICA, INC.
  18. Remove the PCV hose assembly A from clip (A), and remove the vacuum hose from clip (B).
    Fig 7: Identifying PCV Hose Assembly Clip And Vacuum Hose Clip
    G08538637Courtesy of SUBARU OF AMERICA, INC.
  19. Disconnect the vacuum hose (A) and the connector (B) from the PCV hose assembly B.
    Fig 8: Identifying Vacuum Hose And Connector
    G08538638Courtesy of SUBARU OF AMERICA, INC.
  20. Disconnect the air control hose (A) from the waste gate actuator, and loosen the clamp which holds the intake duct to the turbocharger.
    Fig 9: Identifying Air Control Hose
    G08538639Courtesy of SUBARU OF AMERICA, INC.
  21. Remove the engine coolant hose from the water tank pipe.
    Fig 10: Locating Engine Coolant Hose Clamp
    G08538640Courtesy of SUBARU OF AMERICA, INC.
  22. Remove the engine harness from clip (A).
    Fig 11: Identifying Engine Harness Clip
    G08538641Courtesy of SUBARU OF AMERICA, INC.
  23. Disconnect the bulkhead harness connectors from the engine harness connectors.
    Fig 12: Locating Bulkhead Harness Connectors
    G08538642Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the engine harness connector from the engine harness bracket.
    Fig 13: Locating Engine Harness Connector
    G08538643Courtesy of SUBARU OF AMERICA, INC.
  25. Disconnect the connector (A) from the engine coolant temperature sensor, connector (B) from the oil pressure switch, and connector (C) from the crankshaft position sensor.
    Fig 14: Identifying Engine Coolant Temperature Sensor And Crankshaft Position Sensor Connector
    G08538644Courtesy of SUBARU OF AMERICA, INC.
  26. Disconnect the connector from power steering pump switch.
    Fig 15: Locating Power Steering Pump Switch Connector
    G08538645Courtesy of SUBARU OF AMERICA, INC.
  27. Disconnect the connector from the knock sensor.
    Fig 16: Locating Knock Sensor Connector
    G08538646Courtesy of SUBARU OF AMERICA, INC.
  28. Disconnect the connector from the secondary air combination valve.
    Fig 17: Locating Secondary Air Combination Valve Connectors
    G08538647Courtesy of SUBARU OF AMERICA, INC.
  29. Disconnect the connector from the intake camshaft position sensor.
    Fig 18: Locating Intake Camshaft Position Sensor Connector
    G08538648Courtesy of SUBARU OF AMERICA, INC.
  30. Disconnect the connector from the intake oil flow control solenoid valve.
    Fig 19: Locating Intake Oil Flow Control Solenoid Valve Connector
    G08538649Courtesy of SUBARU OF AMERICA, INC.
  31. Lift up the vehicle.
  32. Remove the engine harness cover. (right side only.)
    Fig 20: Identifying Engine Harness Cover
    G08538650Courtesy of SUBARU OF AMERICA, INC.
  33. Disconnect connector (A) from the exhaust camshaft position sensor, connector (B) from the exhaust oil flow control solenoid valve, and connector (C) from the ignition coil.
    Fig 21: Identifying Exhaust Camshaft Position Sensor, Exhaust Oil Flow Control Solenoid Valve And Ignition Coil Connectors
    G08538651Courtesy of SUBARU OF AMERICA, INC.
  34. Lower the vehicle.
  35. Remove the clip (A) which hold the engine harness to the rocker cover RH.
    Fig 22: Identifying Engine Harness Clip
    G08538652Courtesy of SUBARU OF AMERICA, INC.
  36. Remove the bolts that secure the air duct to the rocker cover LH, and remove the engine harness.
    Fig 23: Locating Air Duct To Rocker Cover LH Bolts
    G08538653Courtesy of SUBARU OF AMERICA, INC.
  37. Disconnect the fuel delivery hose, fuel return hose and evaporation hose.
    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from hoses using a container or cloth.
    1. Set the ST to the fuel pipe.

      ST 42099AE000 QUICK CONNECTOR RELEASE

    2. Disconnect the quick connector of the fuel delivery hose and fuel return hose by pushing the ST in the direction of the arrow.
    3. Remove the clip and disconnect the evaporation hose from the fuel pipe.
      Fig 24: Identifying Fuel Delivery Hose, Fuel Return Hose And Evaporation Hose
      G08538654Courtesy of SUBARU OF AMERICA, INC.
  38. Remove the intake manifold from cylinder head.
    Fig 25: Locating Intake Manifold Mounting Bolts
    G08538655Courtesy of SUBARU OF AMERICA, INC.
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