LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 201 (Engine Controls - Removal & Installation) >> Fuel Systems >> Fuel Rails & Injectors (2.5L) >> Removal

Fuel Rails & Injectors (2.5L): Removal

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Apply new engine oil to parts before installing the parts, as shown in the illustration. See Figure.
NOTE: Do not remove or disassemble components or parts unless instructed/required to do so in the text or illustrations.
NOTE: For fuel pressure release, see RELIEVING FUEL PRESSURE under FUEL SYSTEM in SYSTEM & COMPONENT TESTING article, for Fuel Pressure, see CHECKING FUEL PRESSURE in BASIC DIAGNOSTIC PROCEDURES article.
  1. Release the fuel pressure.
  2. Remove intake air duct, perform following steps in order:
    • Disconnect MAF sensor harness connector. See Figure and Figure .
    • Disconnect the tube clamp at the electrical throttle control actuator and the fresh air intake tube. See Figure.
      CAUTION: Handle the MAF sensor with care, do not shock it, do not disassemble it and do not touch the internal sensor.
    • Remove air cleaner to electronic throttle control actuator tube, air cleaner case (upper), with MAF sensor attached. See Figure and Figure .
    • Remove the resonator in the fender, as necessary.
    WARNING: Prepare a container and cloth for catching any spilled fuel, have a plan for if you have a large spill. This operation must be performed in an area that is free from any open flames, or sources of ignition.
    CAUTION: While hoses are disconnected seal their openings with vinyl bags or similar material to prevent foreign material from entering them.
  3. Disconnect the fuel hose quick connector at the fuel tube side. See Figure.
  4. Remove the intake collector. See Figure.
  5. Disconnect sub-harness for injector at engine front side, and remove it from the bracket. See Figure.
  6. Loosen the mounting bolts in the order as shown. See Figure. Then remove fuel tube and fuel injectors as an assembly.
  7. Remove the fuel injectors from the fuel tube:
    • Release the clip and remove the fuel injector. See Figure.
    • Pull fuel injector straight out of the fuel tube.
    • Be careful not to damage the nozzle.
    • Avoid any impact, such as dropping the fuel injector.
    • Do not disassemble or adjust the fuel injector.
scientia non olet · About LEMON Manuals