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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical (Pr25DD) (2 Of 2)) >> Removal And Installation >> High Pressure Fuel Pump And Fuel Hose >> HIGH PRESSURE FUEL PUMP AND FUEL HOSE : Removal & Installation >> PR25DD engine >> Removal

PR25DD engine: Removal

WARNING: This page is about a different variant/trim than selected.
WARNING:
  • Be sure to read PRECAUTION FOR HANDLING HIGH PRESSURE FUEL SYSTEM : Precautions 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.
  • Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
  • To avoid the danger of being scalded, Do not drain engine coolant when engine is hot.
    NOTE: When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.
  2. Release fuel pressure. Refer to Work Procedure .
  3. Remove the intake manifold. Refer to Removal and Installation .
  4. Remove the high pressure fuel pump insulator.
  5. Disconnect the quick connector (A) using the following procedure:
    GNSALBIA0518Z-518Courtesy of NISSAN NORTH AMERICA, INC.
    1. Disconnect the hose clamp bracket (1) from the fuel feed hose (2).
    2. Disengage (A) and pull up (B) the pawl of the fuel feed hose and fuel hose connector retainer (C) to disconnect the fuel feed hose and fuel hose from the fuel feed tube.
      GNSJPBIA4377Z-377Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: If the fuel feed hose, fuel hose or fuel feed tube is stuck, hold the fuel pipe by hand and disconnect it by pushing and pulling.
      CAUTION:
      • Keep parts away from heat source. Especially, be careful when welding is performed around them.
      • Do not expose parts to battery electrolyte or other acids.
      • Do not bend or twist connection between quick connector and fuel feed hose or fuel hose during installation/removal.
      • Pull quick connector while holding at location (D).
      • Do not remove the retainer.
      • Prepare a tray and waste beforehand as fuel leaks out.
      • Do not pull with lateral force applied. O-ring inside quick connector may be dama deg.
      • To prevent damage to each joint and protect it from the entry of foreign matter, cover the joint with plastic bag (A) or an equivalent.
        GNSJPBIA4378Z-378Courtesy of NISSAN NORTH AMERICA, INC.
  6. Remove the high pressure fuel tube.
    CAUTION: Do not reuse high pressure fuel tube.
  7. Disconnect the harness connector from the high pressure fuel pump.
  8. Remove high pressure fuel pump bolts (A) and remove high pressure fuel pump (1).
    GNSALBIA0519Z-519Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • To prevent damage to the high pressure fuel pump and camshaft bracket, loosen the bolts (A) by alternating sides one turn at a time until the tension applied to the bolts (A) by the high pressure fuel pump disappears.
    • Do not reuse O-ring.
  9. Remove high pressure fuel pump lifter (if necessary).
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