2016 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Fuel Injector LH

CAUTION:
  • Be careful not to spill fuel.
  • Catch the fuel from the pipes using a container or cloth.
  1. Disconnect the ground terminal from battery sensor. < Ref. to BATTERY , NOTE, Note. >
  2. Remove the intake manifold. < Ref. to REMOVAL , Intake Manifold. >
  3. Remove the fuel pump insulator. < Ref. to FUEL PUMP INSULATOR , REMOVAL, Fuel Insulators
  4. Remove the fuel pipe insulator No. 1. < Ref. to FUEL PIPE INSULATOR NO. 1 , REMOVAL, Fuel Insulators
  5. Remove the fuel pipe insulator No. 2. < Ref. to FUEL PIPE INSULATOR NO. 2 , REMOVAL, Fuel Insulators
  6. Remove the fuel pipe insulator No. 3. < Ref. to FUEL PIPE INSULATOR NO. 3 , REMOVAL, Fuel Insulators
  7. Remove the flare nut (A) and bolt (B), and then remove the high-pressure fuel delivery pipe assembly.
    Fig 1: Identifying High-Pressure Fuel Delivery Pipe Assembly Flare Nuts And Bolts
    G10266132Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the high-pressure fuel delivery pipes.
    Fig 2: Locating High-Pressure Fuel Delivery Pipes Flare Nuts
    G09479663Courtesy of SUBARU OF AMERICA, INC.
  9. Disconnect the connector (A) from fuel injector, and remove the fuel injector pipe LH.
    Fig 3: Identifying Fuel Injector Connector With Bolts
    G09479664Courtesy of SUBARU OF AMERICA, INC.
  10. Remove the holder from the fuel injector.
    Fig 4: Locating Holder Of Fuel Injector
    G09479665Courtesy of SUBARU OF AMERICA, INC.
  11. Using ST, remove the fuel injector from the cylinder head.

    ST 18356AA000 INJECTOR REMOVER

    1. Set the ST so that its mark faces the center of the engine.
      Fig 5: Removing Fuel Injector From Cylinder Head Using Injector Remover ST18356AA000
      G09479666Courtesy of SUBARU OF AMERICA, INC.
    2. Pinch the fuel injector groove (A) with the claw section (B) of ST.
      Fig 6: Pinching Fuel Injector Groove With Claw Section Of ST
      G09479667Courtesy of SUBARU OF AMERICA, INC.
    3. Press the ST to the cylinder head.
      Fig 7: Pressing ST To Cylinder Head
      G09479668Courtesy of SUBARU OF AMERICA, INC.
    4. Screw in the threaded section of the ST clockwise, and remove the fuel injector from the cylinder head.
      Fig 8: Screwing Threaded Section Of ST Clockwise
      G09479669Courtesy of SUBARU OF AMERICA, INC.
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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