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Home >> Subaru >> 2018 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Injection System (STI) >> Intake Manifold >> Disassembly

Intake Manifold: Disassembly

  1. Remove clamp (A) holding the fuel pipe protector RH to the engine harness, and remove the fuel pipe protector RH.
    G08538680
  2. Remove the fuel pipe protector LH.
    G08538681
  3. Remove the connector from the intake duct.
    G08538682
  4. Remove the connector from the PCV hose assembly.
    G08538683
  5. Remove purge control solenoid valve 1 (A) and purge control solenoid valve 2 (B).
    G08538684
  6. Disconnect the connector (A) from the wastegate control solenoid valve, and disconnect the vacuum hose (B) from the intake duct.
    G11571504
  7. Remove the solenoid valve bracket together with the wastegate control solenoid valve.
    G11571505
  8. Remove the engine ground terminals from the intake manifold.
    G06344595
  9. Disconnect the connector (A) from the throttle position sensor, and the connector (B) from the manifold pressure sensor.
    G08538688
  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.
    G06344597
  11. Remove the throttle body from the intake manifold.
    G08538690
  12. Remove the harness band (A) which holds the engine harness to the fuel injector pipe.
    • RH side
      G08538691
    • LH side
      G08538692
  13. Disconnect the connector from fuel injector.
    G06344601
  14. Disconnect the connector from the tumble generator valve assembly.
    G08538694
  15. Remove the bolts which hold fuel injector pipe.
    • RH side
      G06344603
    • LH side
      G06344604
      G06344605
  16. Remove the fuel injector.
    G06344606
  17. Remove the harness brackets holding the engine harness to the intake manifold, and remove the engine harness.
    G06344607
  18. Loosen the clamp holding the RH side fuel hose to the fuel injector pipe RH, and remove the fuel injector pipe RH.
    G08538700
  19. Loosen the clamp holding the LH side fuel hose to the fuel injector pipe LH, and remove the fuel injector pipe LH.
    G08538701
  20. Remove the bolts holding the fuel pipe assembly to the intake manifold, and remove the fuel pipe assembly.
    G05333518
  21. Remove the intake duct from intake manifold.
    G11571522
  22. Remove the tumble generator valve assembly from the intake manifold.
    G06344612
  23. Remove the nipple from the intake manifold.
    G08538705
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