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Home >> Subaru >> 2007 >> Impreza WRX STi >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DOTC) >> Intake Manifold >> Disassembly

Intake Manifold: Disassembly

  1. Remove the fuel pipe protector RH.
    • Except for STI model
      Fig 1: Locating Fuel Pipe Protector With Bolts (RH) For Except STI Model
      G04998298Courtesy of SUBARU OF AMERICA, INC.
    • STI model
    • Fig 2: Locating Fuel Pipe Protector With Bolts (RH) For STI Model
      G05333498Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the fuel pipe protector LH.
    • Except for STI model
      Fig 3: Locating Fuel Pipe Protector With Bolts (LH) For Except STI Model
      G04998299Courtesy of SUBARU OF AMERICA, INC.
    • STI model
    Fig 4: Locating Fuel Pipe Protector With Bolts (LH) For STI Model
    G05333500Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the engine ground terminal from the intake manifold.
    Fig 5: Identifying Engine Ground Terminal
    G04998300Courtesy of SUBARU OF AMERICA, INC.
    Fig 6: Identifying Engine Ground Terminal On Intake Manifold
    G04998301Courtesy of SUBARU OF AMERICA, INC.
  4. Disconnect the connector from the throttle position sensor (A), and the manifold pressure sensor (B).
    Fig 7: Identifying Throttle Position And Manifold Absolute Pressure Sensor
    G04998253Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the throttle body from intake manifold.
    Fig 8: Locating Throttle Body
    G04998255Courtesy of SUBARU OF AMERICA, INC.
  6. Disconnect the connector from fuel injector.
    Fig 9: Locating Fuel Injector Connectors
    G04998304Courtesy of SUBARU OF AMERICA, INC.
  7. Disconnect the connector from the tumble generator valve assembly.
    • Except for STI model
      Fig 10: Identifying Connector For Tumble Generator Valve Actuator
      G04998305Courtesy of SUBARU OF AMERICA, INC.
      Fig 11: Identifying Connector For Tumble Generator Valve Sensor
      G04998306Courtesy of SUBARU OF AMERICA, INC.
    • STI model
    • Fig 12: Identifying Connector For Tumble Generator Valve Sensor (STI Model)
      G05333508Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the purge control solenoid valve. <Ref. to REMOVAL , Purge Control Solenoid Valve .>
  9. Remove the two bolts which hold fuel pipes on the left side of intake manifold.
    Fig 13: Locating Bolts Holding Fuel Pipes On Left Side Of Intake Manifold
    G04998309Courtesy of SUBARU OF AMERICA, INC.
  10. Remove the bolt which holds fuel injector pipe onto intake manifold.
    • LH side
      Fig 14: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (LH)
      G04998310Courtesy of SUBARU OF AMERICA, INC.
      Fig 15: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (LH)
      G04998311Courtesy of SUBARU OF AMERICA, INC.
    • RH side
    Fig 16: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (RH)
    G04998312Courtesy of SUBARU OF AMERICA, INC.
    Fig 17: Locating Bolt Holding Fuel Injector Pipe Onto Intake Manifold (RH)
    G04998313Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the fuel injector.
    Fig 18: Holding Fuel Injector
    G04998314Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the harness bracket which holds the engine harness onto intake manifold.
    Fig 19: Locating Harness Bracket
    G04998315Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the engine harness from intake manifold.
  14. Loosen the clamp which holds the front LH side fuel hose to injector pipe to remove the pipe from clamp.
    Fig 20: Locating Fuel Hose Clamp
    G04998316Courtesy of SUBARU OF AMERICA, INC.
  15. Loosen the clamp which holds the RH side fuel hose to injector pipe to remove the pipe from clamp.
    Fig 21: Locating Clamp Holding Fuel Hose To Fuel Injector Pipe (RH)
    G04998317Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the bolts which install fuel pipe assembly on intake manifold.
    Fig 22: Locating Fuel Pipe Assembly Bolts
    G05333518Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the fuel pipe assembly and pressure regulator from intake manifold.
  18. Remove the intake duct from intake manifold.
    Fig 23: Locating Air Intake Duct For Intake Manifold
    G04998319Courtesy of SUBARU OF AMERICA, INC.
  19. Remove the tumble generator assembly from intake manifold.
  20. Fig 24: Locating Tumble Generator Valve Assembly
    G04998320Courtesy of SUBARU OF AMERICA, INC.