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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1200 (Engine Mechanical) >> Intake Manifold >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. Partially drain the engine coolant. Refer to "DRAINING ENGINE COOLANT ".
    WARNING: To avoid the danger of being scalded, never drain the engine coolant when the engine is hot.
  2. Remove the engine room cover using power tool. Refer to "REMOVAL ".
  3. Release the fuel pressure. Refer to "FUEL PRESSURE RELEASE ".
  4. Remove the air duct and resonator assembly. Refer to "REMOVAL ".
  5. Disconnect the fuel tube quick connector on the engine side.
    Fig 1: Disconnecting Fuel Tube Quick Connector On Engine Side
    G02384395Courtesy of NISSAN MOTOR CO., U.S.A.
    • Perform the following steps to disconnect the quick connector using Tool.
      1. Tool number: 16441 6N210 (J-45488) 
    1. Remove quick connector cap (engine side only).
      Fig 2: Identifying Quick Connector, Quick Connector Cap And Fuel Tube
      G02384396Courtesy of NISSAN MOTOR CO., U.S.A.
    2. With the sleeve side of Tool facing quick connector, install Tool onto fuel tube.
    3. Insert Tool into quick connector until sleeve contacts and goes no further. Hold the Tool in that position.
      CAUTION: Inserting the Tool hard will not disconnect quick connector. Hold Tool where it contacts and goes no further.
    4. Draw and pull out quick connector straight from fuel tube.
      CAUTION:
      • Pull quick connector holding "A" position in illustration.
      • 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.
    Fig 3: Drawing And Pulling Out Quick Connector Straight From Fuel Tube
    G02384397Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Remove or disconnect harnesses, brackets, vacuum hose, vacuum gallery and PCV hose and tube from intake manifold.
  7. Remove electric throttle control actuator by loosening bolts diagonally.
    CAUTION:
    • Handle carefully to avoid any damage to the electric throttle control actuator.
    • Do not disassemble.
  8. Remove the fuel injectors and fuel tube assembly. Refer to "REMOVAL AND INSTALLATION ".
  9. Loosen the bolts in reverse order shown using power tool.
  10. Remove the intake manifold.
    CAUTION: Cover engine openings to avoid entry of foreign materials.
    Fig 4: Removal Sequence Of Intake Manifold Bolts
    G02384398Courtesy of NISSAN MOTOR CO., U.S.A.
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