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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 3.5L) >> Fuel Injector And Fuel Tube >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different variant/trim than selected.
WARNING: To avoid the danger of being scalded, never drain the coolant when the engine is hot.
  1. Remove the engine cover using power tool.
  2. Release the fuel pressure.

    Refer to FUEL PRESSURE RELEASE .

  3. Remove air cleaner case lid and mass air flow sensor, and air intake tube as an assembly.

    Refer to REMOVAL AND INSTALLATION  .

  4. Partially drain the coolant when the engine is cool. Refer to V6 .
  5. Disconnect fuel tube quick connector at vehicle piping side.

    Refer to step  5 of REMOVAL.

  6. Disconnect the power brake booster vacuum hose, the coolant hoses from the electric throttle control actuator, the swirl control vacuum lines, the fuel injectors electrical connectors, and the PCV hose.
    CAUTION:
    • Cover any engine openings to avoid the entry of any foreign material.
  7. Disconnect the electric throttle control actuator electrical connector and coolant hoses.
  8. Remove the cowl top grille and the windshield wiper assembly.

    Refer to REMOVAL AND INSTALLATION .

  9. Disconnect the power steering hose bracket.
  10. Remove the vacuum tank from the back of the intake manifold collector.
  11. Remove the intake manifold collector pipe and electric throttle control actuator, by loosening the four bolts in a diagonal pattern.
    CAUTION: Handle carefully to avoid any shock to the electric throttle control actuator.
  12. Loosen the bolts in the order shown, and remove the intake manifold collector using power tool.
  13. Remove the fuel rail with the fuel injectors attached, from the intake manifold. Remove the fuel injector O-rings and use new O-rings for installation.
    Fig 1: View Of Intake Manifold Loosening Sequence
    G02110564Courtesy of NISSAN MOTOR CO., U.S.A.