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Home › Subaru › 2017 › Impreza Base, 4D Sedan, Standard Trans › Repair and Diagnosis › Engine Mechanical › Fuel System › Fuel Injection System › Fuel Injector › Installation › Fuel Injector LH

Fuel Injector LH

  1. Replace the following parts with new ones. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Injector>REPLACEMENT .
    • Fuel injector seal
    • Slider washer
    • Backup
    • ring
    • O-ring seal
    • Stopper ring
  2. Install the fuel injector holder to the fuel injector assembly.
    Fig 1: Locating Fuel Injector Holder
    G11252816Courtesy of SUBARU OF AMERICA, INC.
  3. Align the protrusion of the fuel injector holder to the anti-rotation slot of the fuel injector pipe LH, and install the fuel injector to the fuel injector pipe LH.
    CAUTION:
    • Degrease inside of the fuel injector insertion hole of the fuel injector pipe.
    • Check the inside of the fuel injector insertion hole of the fuel injector pipe for foreign materials or damage.
    • Be careful not to allow gasoline to contact with the fuel injector seal and the inside of the mounting hole.
    • Insert a fuel injector into the fuel injector pipe straight in, not at a slant.
    • Make sure there is no gap between the fuel injector pipe and the fuel injector holder.
    • When replacing the fuel injector assembly, select the assembly with the same flow rate stratification number.
    Fig 2: Identifying Flow Rate Stratification Number And QR Code
    G11252821Courtesy of SUBARU OF AMERICA, INC.
    Fig 3: Identifying Protrusion Portion, Anti Rotation Slot And Gap
    G11252822Courtesy of SUBARU OF AMERICA, INC.
  4. Install the fuel injector pipe LH and fuel injector as a single unit to the cylinder head.

    Tightening torque: 

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

  5. Connect the connectors (A) to fuel injector.
    NOTE: Connect the fuel injector #2 connector of the variable capacity A/C model at the intermediate harness side and secure with tape (a).
    Fig 4: Identifying Fuel Injector Connectors (1 Of 2)
    G11252813Courtesy of SUBARU OF AMERICA, INC.
    Fig 5: Identifying Fuel Injector Connectors (2 Of 2)
    G11252814Courtesy of SUBARU OF AMERICA, INC.
  6. Install the high-pressure fuel delivery pipe. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>High Pressure Fuel Delivery Pipe>INSTALLATION>HIGH-PRESSURE FUEL DELIVERY PIPE .
  7. Install the high-pressure fuel delivery pipe assembly. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>High Pressure Fuel Delivery Pipe>INSTALLATION>HIGH-PRESSURE FUEL DELIVERY PIPE ASSEMBLY .
  8. Connect the battery ground terminal. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
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