2019 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Intake Manifold Assembly: Removal

  1. Release the fuel pressure. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL>PROCEDURE>RELEASING OF FUEL PRESSUREĀ .
  2. Open the fuel filler lid and remove the fuel filler cap.
    NOTE: This operation is required to release the inner pressure of the fuel tank.
  3. Disconnect the ground cable from battery. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  4. Remove the intake duct No. 2. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTAKE DUCT>REMOVAL>INTAKE DUCT NO. 2 .
  5. Make sure that the engine coolant remains before removing the intake manifold assembly.
    1. Disconnect the connector (A).
    2. Remove the bolts securing the throttle body and throttle body stay, and move the throttle body aside so that it does not interfere with the work.
    G13198166Courtesy of SUBARU OF AMERICA, INC.
  6. When the engine coolant has been drained before removing the intake manifold assembly.
    1. Disconnect the connector (A) from the throttle body, and disconnect the preheater hose (B).
    G13198167Courtesy of SUBARU OF AMERICA, INC.
  7. Disconnect the connector (A) and remove the clip (B).
  8. Disconnect the connector (C) and remove the clip (D).
  9. Remove the PCV pipe from the intake manifold assembly.
    G13198168Courtesy of SUBARU OF AMERICA, INC.
  10. Disconnect the vacuum hose from the check valve.
    G13198169Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the connector (A) and connector (B).
  12. Disconnect the fuel delivery tube (C). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>REMOVAL>QUICK CONNECTOR DISCONNECTION (TYPE A)Ā .
  13. Remove the fuel delivery tube clamp (D).
  14. Disconnect the purge hose (E).
    G13198170Courtesy of SUBARU OF AMERICA, INC.
  15. Disconnect the connector (A), connector (B), connector (C) and terminal (D), and remove the clip (E) and clip (F).
    G13198171Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the V-belt cover bracket and remove the connector (A).
    G13198172Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the clip (A) and clip (B).
    G13198173Courtesy of SUBARU OF AMERICA, INC.
  18. Remove the connector (A) and connector (B) in numerical order shown in figure.
  19. Disconnect the connector (C), and remove the engine wiring harness from the clip (D).
    G13198174Courtesy of SUBARU OF AMERICA, INC.
  20. Remove the engine wiring harness from the bracket, place it aside so that it does not interfere with work.
    G13198175Courtesy of SUBARU OF AMERICA, INC.
  21. Remove the V-belts. Ref. to MECHANICAL (H4DOTC)>V-BELT>REMOVAL>V-BELT .
  22. Remove the fuel pipe protector No. 2.
  23. Loosen the bolt (A) that secure the A/C compressor.
    G13198176Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the fuel pipe protector No. 1.
    G13198177Courtesy of SUBARU OF AMERICA, INC.
  25. Disconnect the connector (A).
  26. Disconnect the fuel delivery pipe (B). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>REMOVAL>QUICK CONNECTOR DISCONNECTION (TYPE B)Ā .
  27. Remove the clip (C) and clip (D).
    G13198178Courtesy of SUBARU OF AMERICA, INC.
  28. Disconnect the connector (A).
  29. Remove the harness stay.
  30. Remove the harness (B) and clip (C) from the harness stay.
  31. Remove the connector (D) and clip (E).
    G13198179Courtesy of SUBARU OF AMERICA, INC.
  32. Remove the PCV hose. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>PCV HOSE>REMOVAL .
  33. Remove the nuts securing the EGR pipe No. 2.
    G13198180Courtesy of SUBARU OF AMERICA, INC.
  34. Remove stud bolt using TORXĀ® socket E5.
    G13198181Courtesy of SUBARU OF AMERICA, INC.
  35. Remove the intake manifold assembly.
    • RH side
      G13198182Courtesy of SUBARU OF AMERICA, INC.
    • LH side
    G13198183Courtesy of SUBARU OF AMERICA, INC.
  36. Remove the fuel pipe protector stay.
    NOTE: Remove if necessary.
    G13198184Courtesy of SUBARU OF AMERICA, INC.
  37. Remove the cylinder head plate from cylinder head.
    NOTE: Remove if necessary.
    G13198185Courtesy of SUBARU OF AMERICA, INC.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • ā€¢ You smell fuel, burning insulation, or see smoke.
  • ā€¢ Brakes feel soft, pull hard to one side, or make grinding noises.
  • ā€¢ The engine overheats, stalls repeatedly, or misfires under load.
  • ā€¢ You are missing required tools, torque specs, or safe lifting equipment.
  • ā€¢ You are not confident in the next step or safety outcome.

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