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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2015 (Engine Mechanical) >> Fuel Injector And Fuel Tube >> Removal and Installation >> Installation

Removal and Installation: Installation

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install fuel damper as follows:
    1. Install new O-ring to fuel tube as shown below.
      • When handling new O-rings, be careful of the following caution:
        CAUTION:
        • Handle O-ring with bare hands. Do not wear gloves.
        • Lubricate O-ring with new engine oil.
        • Do not clean O-ring with solvent.
        • Make sure that O-ring and its mating part are free of foreign material.
        • When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it quickly into fuel tube.
        • Insert new O-ring straight into fuel tube. Do not twist it.
    2. Install spacer to fuel damper.
    3. Insert fuel damper straight into fuel tube.
      CAUTION:
      • Insert straight, making sure that the axis is lined up.
      • Do not pressure-fit with excessive force.

        Reference value : 130 N (13.3 kg, 29.2 lb)

        Fig 1: Inserting Fuel Damper Straight Into Fuel Tube
        G04878277Courtesy of NISSAN MOTOR CO., U.S.A.
      • Insert fuel damper until "B" is touching "A" of fuel tube.
    4. Tighten bolts evenly in turn.
      • After tightening bolts, make sure that there is no gap between fuel damper cap and fuel tube.
  2. Install new O-rings to fuel injector, paying attention to the following.
    CAUTION:
    • Upper and lower O-ring are different. Be careful not to confuse them.

      Fuel tube side : Blue

      Nozzle side : Brown

    • Handle O-ring with bare hands. Do not wear gloves.
    • Lubricate O-ring with new engine oil.
    • Do not clean O-ring with solvent.
    • Make sure that O-ring and its mating part are free of foreign material.
    • When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it quickly into fuel tube.
    • Insert O-ring straight into fuel injector. Do not twist it.
  3. Install fuel injector to fuel tube as follows:
    1. Insert clip into clip mounting groove on fuel injector.
      • Insert clip so that protrusion "A" of fuel injector matches cutout "A" of clip.
        CAUTION:
        • Do not reuse clip. Replace it with a new one.
        • Be careful to keep clip from interfering with O-ring. If interference occurs, replace O-ring.
    2. Insert fuel injector into fuel tube with clip attached.
      • Insert it while matching it to the axial center.
      • Insert fuel injector so that protrusion "B" of fuel tube matches cutout "B" of clip.
      • Make sure that fuel tube flange is securely fixed in flange fixing groove on clip.
    3. Make sure that installation is complete by checking that fuel injector does not rotate or come off.
      • Make sure that protrusions of fuel injectors are aligned with cutouts of clips after installation.
        Fig 2: Inserting Clip Into Clip Mounting Groove On Fuel Injector
        G04894028Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Connect fuel tube (RH) to fuel tube (LH), and tighten bolts temporarily.
    • Tighten bolts with the specified torque after installing fuel tube and fuel injector assembly.
    CAUTION:
    • Handle O-ring with bare hands. Do not wear gloves.
    • Lubricate O-ring with new engine oil.
    • Do not clean O-ring with solvent.
    • Make sure that O-ring and its mating part are free of foreign material.
    • When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it quickly into fuel tube.
    • Insert new O-ring straight into fuel tube. Do not twist it.
  5. Install fuel tube and fuel injector assembly to intake manifold.
    CAUTION: Be careful not to let tip of injector nozzle come in contact with other parts.
    • Tighten bolts in two steps in numerical order as shown below.

      Fuel injector tube assembly bolts 

      1st step : 10.1 N.m (1.0 kg-m, 7 ft-lb) 

      2nd step : 22.0 N.m (2.2 kg-m, 16 ft-lb) 

      Fig 3: Fuel Tube And Fuel Injector Assembly Bolts Tightening Sequence
      G04894025Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Tighten bolts which connects fuel tube (RH) and fuel tube (LH) with the specified torque.
  7. Connect fuel injector harness connector.
  8. Install intake manifold collector. Refer to "INSTALLATION ".
  9. Installation of the remaining components is in the reverse order of removal.
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