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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System >> High Pressure Fuel Delivery Pipe >> Installation >> High-Pressure Fuel Delivery Pipe Assembly
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High-Pressure Fuel Delivery Pipe Assembly

  1. Install the high-pressure fuel delivery pipe assembly.
    CAUTION:
    • Always use a new high-pressure fuel delivery pipe assembly.
    • Check that the seal surface of the fuel injector pipe have no deformation, cracks or other damages.
    • Check that the seal surface of the fuel injector pipe have no foreign materials.
    1. Temporarily tighten the flare nut (A) to the fuel injector pipe by hand until it is seated, and secure the high-pressure fuel delivery pipe assembly to the water pipe assembly using bolts (B).

      Tightening torque: 

      T1: 6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

    2. Tighten the flare nuts (A).

      Tightening torque: 

      T2: 25 N.m (2.5 kgf-m, 18.4 ft-lb)

      Fig 1: Flare Nuts And High-Pressure Fuel Delivery Pipe Assembly Bolts Components (With Torque Specification)
      G13619636Courtesy of SUBARU OF AMERICA, INC.
  2. Install the fuel pipe insulator No. 1, fuel pipe insulator No. 2, fuel pipe insulator No. 3, fuel pipe insulator No. 4 and fuel pipe insulator No. 5. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>Fuel Insulator>INSTALLATION .
  3. Install the intake manifold assembly. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>Intake Manifold Assembly>INSTALLATION .
  4. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .