I30 1996-1997

Valve Cover (Cylinder Head Cover)

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Removal & Installation



  1. Disconnect the negative battery cable.
  2.  
  3. Remove the left side cylinder head cover ornament.
    NOTE
    Before disconnecting any hoses or connectors, note the locations for reassembly.

  4.  
  5. Remove the air duct to intake manifold hose, collector hose, blow-by hose, and vacuum hoses.
  6.  
  7. Remove the fuel hoses and disconnect the harness connections.
  8.  
  9. Disconnect the canister purge hoses.
  10.  
  11. Disconnect and remove all six ignition coils from the spark plugs. Remove the spark plugs.
  12.  
  13. Remove the bolts that secure the EGR tube and remove the tube.
  14.  
  15. Remove the intake manifold collector supports and remove the collector.
  16.  
  17. Remove the bolts that secure the intake manifold to the engine block and remove the manifold. Loosen the bolts in the reverse sequence of the tightening procedure.
  18.  
  19. Remove the LH and RH cylinder head covers from the cylinder head in reverse sequence.
  20.  
  21. Clean all gasket material from the mating surfaces.
  22.  

To install:

  1. With the cover mating surface clean, apply a 0.12 inch (3mm) continuous bead of liquid gasket to the rocker covers and install the covers. Tighten the mounting bolts in sequence as follows:
    1. Bolts No. 1-10-Tighten to 9-26 inch lbs. (1-3 Nm)
    2.  
    3. Bolts No. 1-10-Tighten to 52-69 inch lbs. (6-8 Nm)

      Click image to see an enlarged view

      Fig. Right cylinder head cover torque sequence-3.0L (VQ30DE) engine



      Click image to see an enlarged view

      Fig. Left cylinder head cover torque sequence-3.0L (VQ30DE) engine

    4.  

  2.  
  3. Using new gaskets, install the intake manifold. Tighten the nuts and bolts in sequence and in two stages as follows:
    1. Bolts and nuts-Tighten to 44-86 inch lbs. (5-10 Nm)
    2.  
    3. Bolts and nuts-Tighten to 16-18 ft. lbs. (22-25 Nm)
    4.  

  4.  
  5. Install the fuel tube assembly and tighten the bolts to 15-20 ft. lbs. (21-26 Nm).
  6.  
  7. Install the intake manifold collector assembly and tighten the mounting bolts to 16-18 ft. lbs. (22-25 Nm). Install the intake manifold collector support brackets.
  8.  
  9. Install the spark plugs and the ignition coils.
  10.  
  11. Install the rocker cover ornament.
  12.  
  13. Install the water hoses to the cylinder head and intake manifold.
  14.  
  15. Connect the canister purge hoses.
  16.  
  17. Connect the fuel hoses and wiring harness connections to the fuel rail.
  18.  
  19. Connect the negative battery cable.
  20.  

 
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