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Home >> Subaru >> 2022 >> WRX Base, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System >> Intake Manifold Assembly >> Installation
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Intake Manifold Assembly: Installation

  1. Install the cylinder head plate to the cylinder head.
    G13619551Courtesy of SUBARU OF AMERICA, INC.
  2. Install the fuel pipe protector stay.

    Tightening torque: 

    19 N.m (1.9 kgf-m, 14.0 ft-lb)

    G13198184Courtesy of SUBARU OF AMERICA, INC.
  3. Set a new gasket and install the intake manifold assembly.
    NOTE:

    Be careful not to let the engine wiring harness be caught by the parts. 

    Tightening torque: 

    25 N.m (2.5 kgf-m, 18.4 ft-lb)

    G13619549Courtesy of SUBARU OF AMERICA, INC.
  4. Set a new gasket, and install the stud bolts using TORX® E5.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

    G13198181Courtesy of SUBARU OF AMERICA, INC.
  5. Temporarily attach the EGR pipe No. 2 and tighten it in order of (1)→(2)→(3).

    Tightening torque: 

    9 N.m (0.9 kgf-m, 6.6 ft-lb)

    Fig 1: EGR Pipe No. 2 Nuts Tightening Sequence
    G14600919Courtesy of SUBARU OF AMERICA, INC.
  6. Install the PCV hose. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>PCV HOSE>INSTALLATION
  7. Install the harness stay.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

  8. Install the clip (A) and clip (B) to the harness stay.
    G14600909Courtesy of SUBARU OF AMERICA, INC.
  9. Connect the connector (A).
  10. Install the clip (B) and clip (C).
    G14600908Courtesy of SUBARU OF AMERICA, INC.
  11. Install the clip (C) and clip (D).
  12. Connect the fuel delivery pipe (B). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>INSTALLATION>QUICK CONNECTOR CONNECTION (TYPE B) 
  13. Connect the connector (A).
    G14600907Courtesy of SUBARU OF AMERICA, INC.
  14. Install the fuel pipe protector No. 2.

    Tightening torque: 

    19 N.m (1.9 kgf-m, 14.0 ft-lb)

    G14600906Courtesy of SUBARU OF AMERICA, INC.
  15. Install the fuel pipe protector No. 1.

    Tightening torque: 

    25 N.m (2.5 kgf-m, 18.4 ft-lb)

    G14600905Courtesy of SUBARU OF AMERICA, INC.
  16. Set the engine wiring harness and secure the engine wiring harness to the bracket with the claw.
    G14600904Courtesy of SUBARU OF AMERICA, INC.
  17. Install the engine wiring harness to the clip (A), and connect the connector (B).
  18. Connect the connector (C) and connector (D) in numerical order shown in figure.
    G14600926Courtesy of SUBARU OF AMERICA, INC.
  19. Secure the battery cable assembly with the claw (B) and clip (A).
    G14600902Courtesy of SUBARU OF AMERICA, INC.
  20. Secure the battery cable assembly with the clip (A).
  21. Connect the connector (B), connector (C) and terminal (D).

    Tightening torque: 

    15.5 N.m (1.6 kgf-m, 11.4 ft-lb)

    G14600928Courtesy of SUBARU OF AMERICA, INC.
  22. Install the V-belt cover.
    NOTE:
    • Check the grommet for peel-off or disengagement. 
    • Be careful not to deform the bracket during installation. 

    Tightening torque: 

    7 N.m (0.7 kgf-m, 5.2 ft-lb)

  23. Connect the evaporation hose (E).
  24. Install the fuel delivery tube clamp (D).
  25. Connect the fuel delivery tube (C). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>INSTALLATION>QUICK CONNECTOR CONNECTION (TYPE A) 
  26. Connect the connector (A) and connector (B).
    G13198170Courtesy of SUBARU OF AMERICA, INC.
  27. Connect the PCV pipe assembly to the intake duct No. 1, and lock it.
    CAUTION:
    • Make sure there are no damage or dust on connections. If necessary, clean the seal surface of the pipe. 
    • Confirm that the connections are secure. 
    NOTE:

    It is possible to install with the spring locked. 

    G14600898Courtesy of SUBARU OF AMERICA, INC.
  28. Connect the vacuum hose.
    G14600897Courtesy of SUBARU OF AMERICA, INC.
  29. Install the PCV pipe to the intake manifold assembly.
  30. Connect the connector (C) and secure it with the clip (D).
  31. Connect the connector (A) and secure it with clip (B).
    G14600896Courtesy of SUBARU OF AMERICA, INC.
  32. Install the throttle body. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>THROTTLE BODY>INSTALLATION 
  33. Install the intake duct No. 2. Ref. to INTAKE (INDUCTION) (H4DOTC)>Intake Duct>INSTALLATION>INTAKE DUCT NO. 2
  34. Install the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>INSTALLATION
  35. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY
  36. Install the fuel filler cap, and close the fuel filler lid.
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