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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2015 (Engine Mechanical) >> Cylinder Head >> Removal and Installation >> Inspection After Removal >> Cylinder Head Distortion

Cylinder Head Distortion

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When performing this inspection, cylinder block distortion should be also checked. Refer to "CYLINDER BLOCK DISTORTION ".
  1. Using suitable tool, wipe off oil, scale, gasket, sealant and carbon deposits from surface of cylinder head.
    CAUTION: Do not allow gasket fragments to enter engine oil or engine coolant passages.
  2. At each of several locations on bottom surface of cylinder head, measure the distortion in six directions.

    Limit : 0.1 mm (0.004 in) 

    • If it exceeds the limit, replace cylinder head.
      Fig 1: Checking Bottom Surface Of Cylinder Head
      G04878416Courtesy of NISSAN MOTOR CO., U.S.A.