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Home >> Subaru >> 2018 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Injection System (Except For STI) >> Fuel Pressure Sensor >> Installation
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Fuel Pressure Sensor: Installation

  1. Replace the injector seal, backup ring and O-ring with a new part. Ref. to FUEL INJECTION (FUEL SYSTEMS) (EXCEPT FOR STI)>Fuel Injector>REPLACEMENT .
  2. Set the spacer, holder, rubber cover and snap ring to the fuel injector, and install it to the fuel injector pipe RH.
    CAUTION: Always use a new spacer, holder, rubber cover and snap ring.
    G12444141
  3. Set the fuel injector on the fuel injector pipe RH.
    CAUTION:
    • on the fuel injector pipe RH must be aligned with on the rubber cover below image.
    • Parting line (a) of the rubber cover must be straight.
      G12444121
    • The end surface of the fuel injector pipe RH must fit inside the rubber cover.
    • There must be no gap between the snap ring and rubber cover.
    G12444122
  4. Install the fuel injector pipe RH and fuel injector as a single unit to the cylinder head.
  5. Tighten the fuel injector pipe RH.

    Tightening Torque:

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

    G09479694
  6. Temporarily tighten the fuel pressure sensor to the fuel injector pipe RH until it cannot be turned by hand.
    CAUTION: Always use a new fuel pressure sensor.
  7. Tighten the fuel pressure sensor.
    CAUTION:
    • Be careful not to spill oil on the screw sections of the fuel pressure sensor and the fuel injector pipe RH.
    • Be careful not to let foreign matter enter into the fuel pressure sensor during installation.
    • Do not recheck the Tightening Torque after tightening the fuel pressure sensor with specified torque.

    Tightening Torque:

    46 N.m (4.7 kgf-m, 33.9 ft-lb)

    G09479695
  8. Install the high-pressure fuel delivery pipe assembly. Ref. to FUEL INJECTION (FUEL SYSTEMS) (EXCEPT FOR STI)>High Pressure Fuel Delivery Pipe>INSTALLATION>HIGH-PRESSURE FUEL DELIVERY PIPE ASSY .
  9. Connect the ground terminal to battery sensor. Ref. to NOTE>BATTERY .