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Home >> Subaru >> 2021 >> WRX STI Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (2.5L) >> Intake Manifold >> Disassembly
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Intake Manifold: Disassembly

  1. Remove clamp (A) holding the fuel pipe protector RH to the engine harness, and remove the fuel pipe protector RH.
    G08538680Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the fuel pipe protector LH.
    G08538681Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the connector from the intake duct.
    G08538682Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the connector from the PCV hose assembly.
    G08538683Courtesy of SUBARU OF AMERICA, INC.
  5. Remove purge control solenoid valve 1 (A) and purge control solenoid valve 2 (B).
    G08538684Courtesy of SUBARU OF AMERICA, INC.
  6. Disconnect the connector (A) from the wastegate control solenoid valve, and disconnect the vacuum hose (B) from the intake duct.
    G11571504Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the solenoid valve bracket together with the wastegate control solenoid valve.
    G11571505Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the engine ground terminals from the intake manifold.
    G06344595Courtesy of SUBARU OF AMERICA, INC.
  9. Disconnect the connector (A) from the throttle position sensor, and the connector (B) from the manifold pressure sensor.
    G08538688Courtesy of SUBARU OF AMERICA, INC.
  10. Remove clip (A) holding the engine harness and vacuum hose, clip (B) holding the engine harness to the engine harness stay, and the bolt holding the engine harness to the intake manifold.
    G06344597Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the throttle body from the intake manifold.
    G08538690Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the harness band (A) which holds the engine harness to the fuel injector pipe.
    • RH side
      G08538691Courtesy of SUBARU OF AMERICA, INC.
    • LH side
    G08538692Courtesy of SUBARU OF AMERICA, INC.
  13. Disconnect the connector from fuel injector.
    G06344601Courtesy of SUBARU OF AMERICA, INC.
  14. Disconnect the connector from the tumble generator valve assembly.
    G08538694Courtesy of SUBARU OF AMERICA, INC.
  15. Remove the bolts which hold fuel injector pipe.
    • RH side
      G06344603Courtesy of SUBARU OF AMERICA, INC.
    • LH side
    G06344604Courtesy of SUBARU OF AMERICA, INC.
    G06344605Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the fuel injector.
    G06344606Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the harness brackets holding the engine harness to the intake manifold, and remove the engine harness.
    G06344607Courtesy of SUBARU OF AMERICA, INC.
  18. Loosen the clamp holding the RH side fuel hose to the fuel injector pipe RH, and remove the fuel injector pipe RH.
    G08538700Courtesy of SUBARU OF AMERICA, INC.
  19. Loosen the clamp holding the LH side fuel hose to the fuel injector pipe LH, and remove the fuel injector pipe LH.
    G08538701Courtesy of SUBARU OF AMERICA, INC.
  20. Remove the bolts holding the fuel pipe assembly to the intake manifold, and remove the fuel pipe assembly.
    G05333518Courtesy of SUBARU OF AMERICA, INC.
  21. Remove the intake duct from intake manifold.
    G11571522Courtesy of SUBARU OF AMERICA, INC.
  22. Remove the tumble generator valve assembly from the intake manifold.
    G06344612Courtesy of SUBARU OF AMERICA, INC.
  23. Remove the nipple from the intake manifold.
    G08538705Courtesy of SUBARU OF AMERICA, INC.
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