LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2005 >> Impreza WRX STi >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection (Fuel Systems) -- H4DOTC >> Intake Manifold >> Disassembly
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Intake Manifold: Disassembly

  1. Remove the fuel pipe protector LH.
    Fig 1: Removing Fuel Pipe Protector LH
    G03816759Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the fuel pipe protector RH.
    Fig 2: Removing Fuel Pipe Protector RH
    G03816760Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the engine ground terminal from the intake manifold.
    Fig 3: Removing Engine Ground Terminal From Intake Manifold (1 Of 2)
    G03816761Courtesy of SUBARU OF AMERICA, INC.
    Fig 4: Removing Engine Ground Terminal From Intake Manifold (2 Of 2)
    G03816762Courtesy of SUBARU OF AMERICA, INC.
  4. Disconnect the connector from the throttle position sensor (A), idle air control solenoid valve (B) and manifold absolute pressure sensor (C).
  5. Disconnect the engine harness fixed by clip (D) from the intake manifold.
    Fig 5: Disconnecting Engine Harness Fixed By Clip From Intake Manifold
    G03816763Courtesy of SUBARU OF AMERICA, INC.
  6. Remove the throttle body from the intake manifold.
    Fig 6: Removing Throttle Body From Intake Manifold
    G03816764Courtesy of SUBARU OF AMERICA, INC.
  7. Disconnect the connector from the fuel injector.
    Fig 7: Disconnecting Connector From Fuel Injector
    G03816765Courtesy of SUBARU OF AMERICA, INC.
  8. Disconnect the connector from the tumble generator valve actuator.
    Fig 8: Disconnecting Connector From Tumble Generator Valve Actuator
    G03816766Courtesy of SUBARU OF AMERICA, INC.
  9. Disconnect the connector from the tumble generator valve sensor.
    Fig 9: Disconnecting Connector From Tumble Generator Valve Sensor
    G03816767Courtesy of SUBARU OF AMERICA, INC.
  10. Disconnect the connector from the purge control solenoid valve.
    Fig 10: Disconnecting Connector From Purge Control Solenoid Valve
    G03816768Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the purge control solenoid valve.
    Fig 11: Removing Purge Control Solenoid Valve
    G03816769Courtesy of SUBARU OF AMERICA, INC.
  12. Disconnect the evaporation hose from the intake manifold.
    Fig 12: Disconnecting Evaporation Hose From Intake Manifold
    G03816770Courtesy of SUBARU OF AMERICA, INC.
  13. Disconnect the evaporation hoses from the purge valve.
    Fig 13: Disconnecting Evaporation Hoses From Purge Valve
    G03816771Courtesy of SUBARU OF AMERICA, INC.
  14. Remove the two bolts which hold the fuel pipes on the left side of intake manifold.
    Fig 14: Removing Two Bolts Holding Fuel Pipes On Left Side Of Intake Manifold
    G03816772Courtesy of SUBARU OF AMERICA, INC.
  15. Remove the bolt which hold the fuel injector pipe onto intake manifold.
    • LH side
      Fig 15: Removing Bolt Holding Fuel Injector Pipe Onto Intake Manifold, LH Side (1 Of 2)
      G03816773Courtesy of SUBARU OF AMERICA, INC.
      Fig 16: Removing Bolt Holding Fuel Injector Pipe Onto Intake Manifold, LH Side (2 Of 2)
      G03816774Courtesy of SUBARU OF AMERICA, INC.
    • RH side
      Fig 17: Removing Bolt Holding Fuel Injector Pipe Onto Intake Manifold, RH Side (1 Of 2)
      G03816775Courtesy of SUBARU OF AMERICA, INC.
      Fig 18: Removing Bolt Holding Fuel Injector Pipe Onto Intake Manifold, RH Side (2 Of 2)
      G03816776Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the fuel injector.
    Fig 19: Removing Fuel Injector
    G03816777Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the harness bracket which holds the engine harness onto intake manifold.
    Fig 20: Removing Harness Bracket Holding Engine Harness Onto Intake Manifold
    G03816778Courtesy of SUBARU OF AMERICA, INC.
  18. Remove the engine harness from the intake manifold.
  19. Loosen the clamp which holds the front left side fuel hose to injector pipe and remove the pipe from clamp.
    Fig 21: Removing Pipe From Clamp
    G03816779Courtesy of SUBARU OF AMERICA, INC.
  20. Remove the fuel injector pipe LH.
  21. Remove the bolts which install the fuel pipe on intake manifold.
    Fig 22: Removing Bolts
    G03816780Courtesy of SUBARU OF AMERICA, INC.
  22. Remove the fuel pipe assembly and pressure regulator, from the intake manifold.
  23. Remove the intake duct from the intake manifold.
    Fig 23: Removing Intake Duct From Intake Manifold
    G03816781Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the tumble generator valve assembly from the intake manifold.
    Fig 24: Removing Tumble Generator Valve Assembly From Intake Manifold
    G03816782Courtesy of SUBARU OF AMERICA, INC.