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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (5.6L) (Except Hybrid) >> Removal And Installation >> Fuel Injector And Fuel Tube >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING:
  • Be sure to read Precaution for Handling High-pressure Fuel System , when working on the high pressure fuel system.
  • Put a "CAUTION: FLAMMABLE" sign in the workshop.
  • Be sure to work in a well ventilated area and furnish workshop with a CO 2 fire extinguisher.
  • Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.
  • To avoid the danger of being scalded, never drain engine coolant when engine is hot.
  1. Release fuel pressure. Refer to Work Procedure .
  2. Remove intake manifold. Refer to Exploded View .
  3. Remove acoustic absorbent. Refer to Exploded View .
  4. Remove fuel feed tube (pump side) and fuel feed tube (bank side).
    CAUTION: Never reuse fuel feed tube.
  5. Remove fuel rail (bank 1) and fuel rail (bank 2).
  6. Disconnect harness connector from fuel injectors.
  7. Remove fuel injector from cylinder head as per the following:
    CAUTION:
    • Be careful with remaining fuel that may go out from fuel tube.
    • Be careful not to damage injector nozzles during removal.
    • Never bump or drop fuel injector.
    • Never disassemble fuel injector.
    1. Remove injector holder.
    2. Install an injector remover [SST:KV10119600 (--)] (A) to the injector connector side so that cutout (B) of injector remover faces the injector connector side.
      GNSJSBIA0342Z-342Courtesy of NISSAN NORTH AMERICA, INC.
      • Hook pawl portion (B) of injector remover [SST: KV10119600 (--)] (A) to groove portion (C) of injector.
        GNSJSBIA0343Z-343Courtesy of NISSAN NORTH AMERICA, INC.
    3. Press down body portion (A) of injector remover [SST: KV10119600 (--)] until it contacts cylinder head.
      GNSJPBIA3747Z-747Courtesy of NISSAN NORTH AMERICA, INC.
    4. Tighten injector remover [SST: KV10119600 (--)] clockwise and remove injector from cylinder head.
      GNSJPBIA3748Z-748Courtesy of NISSAN NORTH AMERICA, INC.
    5. Cut Teflon seal (1) while pinching it. Be careful not to damage injector.
      GNSJSBIA0346Z-346Courtesy of NISSAN NORTH AMERICA, INC.
    6. Remove insulator from mounting hole of fuel injector of cylinder head.
  8. Remove fuel rail pressure sensor from fuel rail (bank 1), if necessary.
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