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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1040 (Engine Mechanical - QG18DE) >> Fuel Injector And Fuel Tube >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Release the fuel pressure. Refer to FUEL PRESSURE CHECK .
  2. Disconnect the intake manifold bracket.
  3. Remove the PCV hose and bracket.
  4. Disconnect the sub-harness for the fuel injectors.
  5. Disconnect the fuel quick connector on the engine side.
    • Using Tool perform the following steps to disconnect the quick connector.
      1. Tool number :J-45488 
      Fig 1: Disconnecting Fuel Quick Connector On Engine Side
      G00773928Courtesy of NISSAN MOTOR CO., U.S.A.
      1. Remove quick connector cap.
        Fig 2: Removing Quick Connector Cap
        G00773929Courtesy of NISSAN MOTOR CO., U.S.A.
      2. With the sleeve side of Tool facing quick connector, install Tool onto fuel tube.
        Fig 3: Inserting Tool Into Quick Connector
        G00773930Courtesy of NISSAN MOTOR CO., U.S.A.
      3. Insert Tool into quick connector until sleeve contacts and goes no further. Hold the Tool on that position.
        CAUTION: Inserting the Tool hard will not disconnect quick connector. Hold Tool where it contacts and goes no further.
      4. Pull the quick connector straight out from the fuel tube.
        CAUTION:
        • Pull quick connector holding it at the "A" position, as shown.
        • Do not pull with lateral force applied. O-ring inside quick connector may be damaged.
        • Prepare container and cloth beforehand as fuel will leak out.
        • Avoid fire and sparks.
        • Be sure to cover openings of disconnected pipes with plug or plastic bag to avoid fuel leakage and entry of foreign materials.
    • When removing fuel hose quick connector at vehicle piping side, perform as follows.
      1. Remove quick connector cap.
        Fig 4: Pulling Out Tube
        G00773931Courtesy of NISSAN MOTOR CO., U.S.A.
      2. Hold the sides of the connector, push in tabs and pull out the tube.
        • If the connector and the tube are stuck together, push and pull several times until they start to move. Then disconnect them by pulling.
        CAUTION:
        • The tube can be removed when the tabs are completely depressed. Do not twist it more than necessary.
        • Do not use any tools to remove the quick connector.
        • Keep the resin tube away from heat. Be especially careful when welding near the tube.
        • Prevent acid liquid such as battery electrolyte etc. from getting on the resin tube.
        • Do not bend or twist the tube during installation and removal.
        • Do not remove the remaining retainer on tube.
        • When the tube is replaced, also replace the retainer with a new one. Retainer color: Green.
        • To keep clean the connecting portion and to avoid damage and foreign materials, cover them completely with plastic bags or something similar.
    • Remove the fuel injectors from the fuel tube, as follows:
      1. Release the clip, and remove the fuel injector.
      2. Pull the fuel injector straight out of the fuel tube.
        CAUTION:
        • Be careful not to damage the nozzle.
        • Avoid any impact, such as dropping the fuel injector.
        • Do not disassemble or adjust the fuel injector.
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