Infinity_QX56_2004-2005

Intake Manifold

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Relieve the fuel system pressure.
  6.  
  7. Remove or disconnect the following:

    Engine cover
     
    Air intake assembly
     
    Fuel supply hose quick connector using special tool J-45488
     
    Wiring harnesses and brackets from manifold
     
    Vacuum hoses
     
    PCV hose and tube
     
    Electric throttle control actuator, loosening bolts diagonally
     
    Fuel injectors
     
    Fuel rail assembly
     
    Intake manifold, removing bolts in reverse order shown in figure

    Click image to see an enlarged view

    Fig. Intake manifold and related parts



    Click image to see an enlarged view

    Fig. Intake manifold torque sequence

     

  8.  

To install:

  1. Install the intake manifold with new gaskets. Tighten the bolts in order as shown.
  2.  
  3. Install or connect the following:

    Fuel rail assembly