2017 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

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.
    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: High-Pressure Fuel Delivery Pipe Assembly Flare Nuts And Bolts With Torque Specification
    G09479673Courtesy of SUBARU OF AMERICA, INC.
  2. Install the fuel pipe insulator No. 3. <Ref. to FUEL PIPE INSULATOR NO. 3 , INSTALLATION, Fuel Insulator.>
  3. Install the fuel pipe insulator No. 2. <Ref. to FUEL PIPE INSULATOR NO. 2 , INSTALLATION, Fuel Insulator.>
  4. Install the fuel pipe insulator No. 1. <Ref. to FUEL PIPE INSULATOR NO. 1 , INSTALLATION, Fuel Insulator.>
  5. Install the intake manifold. <Ref. to INSTALLATION , Intake Manifold.>
  6. Connect the ground terminal to battery sensor. <Ref. to BATTERY , NOTE, Note.>
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.