2022 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Fuel Injector: Replacement

  1. Remove the O-ring (A) and support disc (B).
    G13198235Courtesy of SUBARU OF AMERICA, INC.
  2. Gradually expand the fuel injector seal and remove the fuel injector seal.
    CAUTION:
    • Be careful not to apply too much force when pinching the fuel injector seal, or the fuel injector groove may be damaged.
    • If the tip of the fuel injector assembly is hit or the assembly is dropped, replace the fuel injector assembly with a new one.
    G13198236Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the decoupling.
    NOTE: Remove if necessary.
    G13198237Courtesy of SUBARU OF AMERICA, INC.
  4. Install the fuel injector seal.
    1. Remove carbon from area (A) shown in the figure (fuel injector seal groove).
      CAUTION:
      • Do not attempt to clean the tip.
      • Do not use a wire-brush.
      • If the tip of the fuel injector assembly is hit or the assembly is dropped, replace the fuel injector assembly with a new one.
      G13198238Courtesy of SUBARU OF AMERICA, INC.
    2. Set the ST1 on the end of fuel injector, and install new fuel injector seal (A) on the ST1.
      CAUTION: When setting the fuel injector seal on the ST1, be careful not to set it obliquely, or the seal is stretched and become hard to be fixed.
Factory Service Tools

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When to See a Mechanic

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

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

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