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Home >> Infiniti >> 2013 >> FX37 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Engine Mechanical) >> Removal And Installation >> Intake Manifold >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: To avoid the danger of being scalded, never drain the engine coolant when the engine is hot.
  1. Remove engine cover and engine room cover (RH and LH). Refer to "EXPLODED VIEW ".
  2. Release fuel pressure. Refer to "INSPECTION ".
  3. Remove air duct (inlet) and air duct. Refer to "EXPLODED VIEW ".
  4. Remove quick connector cap (1) and disconnect fuel feed hose (2) on engine side. Refer to "EXPLODED VIEW ".
    Fig 1: Locating Quick Connector Cap And Fuel Feed Hose
    G09000194Courtesy of NISSAN NORTH AMERICA, INC.
  5. Remove engine cover bracket. Refer to "EXPLODED VIEW ".
  6. Remove fuel injector and fuel tube assembly. Refer to "EXPLODED VIEW ".
  7. Disconnect manifold absolute pressure (MAP) sensor and air fuel ratio sensor 1 (bank 1) harness connector.
  8. Remove vacuum tank, EVAP service port hose and EVAP canister purge control solenoid valve.
  9. Disconnect PCV hoses and vacuum hose from intake manifold.
    • Add matching marks as necessary for easier installation.
  10. Drain engine coolant from radiator. Refer to "DRAINING ".
    CAUTION:
    • Perform this step when the engine is cold.
    • Never spill engine coolant on drive belts.
    NOTE: When removing only intake manifold, move electric throttle control actuator without disconnecting the water hoses.
  11. Remove electric throttle control actuator.
    • Loosen mounting bolts in reverse order as shown in the figure below.
    Fig 2: Electric Throttle Control Actuator Mounting Bolts Tightening Sequence
    G09000195Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE:
    • The figure shows the electric throttle control actuator (bank 1) viewed from the air duct side.
    • Viewed from the air duct side, the order of loosening mounting bolts of electric throttle control actuator (bank 1) is the same as that of the electric throttle control actuator (bank 2).
    CAUTION:
    • Handle carefully to avoid any impact to electric throttle control actuator.
    • Never disassemble.
  12. Remove intake manifold with power tool.
    • Loosen mounting bolts in reverse order as shown in the figure below.
    Fig 3: Intake Manifold Mounting Bolts Tightening Sequence
    G09000196Courtesy of NISSAN NORTH AMERICA, INC.
  13. Remove intake manifold gaskets.
    CAUTION: Cover engine openings to avoid entry of foreign materials.
  14. Remove manifold absolute pressure (MAP) sensor, if necessary.
    CAUTION: Handle carefully to avoid any impact to manifold absolute pressure (MAP) sensor.
  15. Remove acoustic absorbent.
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