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Home >> Kia >> 2017 >> Niro LX >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Block >> Cylinder Block >> Repair Procedures >> Inspection

Repair Procedures: Inspection

  1. Remove gasket material.

    Using a gasket scraper, remove all the gasket material from the top surface of the cylinder block.

  2. Clean cylinder block

    Using a soft brush and solvent, thoroughly clean the cylinder block.

  3. Inspect top surface of cylinder block for flatness.

    Using a precision straight edge and feeler gauge, measure the surface contacting the cylinder head gasket for warpage.

    Flatness Of Cylinder Block Gasket Surface  :

    Standard:

    Less than 0.05 mm (0.0020 in.) for total area

    Less than 0.02 mm (0.0008 in.) for a section of 100 mm (3.9370 in.) X 100 mm (3.9370 in.)

    Fig 1: Inspecting Top Surface Of Cylinder Block For Flatness
    G12328771Courtesy of KIA MOTORS AMERICA, INC.
  4. Inspect the cylinder bore

    Visually check the cylinder for vertical scratches.

    If deep scratches are present, replace the cylinder block.

  5. Inspect the cylinder bore diameter.

    Using a cylinder bore gauge, measure the cylinder bore diameter at position in the thrust and axial direction.

    Cylinder Bore Diameter  :

    72.00 - 72.03 mm (2.8346 - 2.8358 in.)

    Fig 2: Inspecting Cylinder Bore Diameter
    G12328772Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Measure at 5mm (0.1969 in.)/71.5mm (2.8150 in.)/132.5mm (5.2165 in.) from the top of cylinder block.
  6. Check the cylinder bore size code on the cylinder block side surface.
    Fig 3: Checking Cylinder Bore Size Code On Cylinder Block Side Surface
    G12328773Courtesy of KIA MOTORS AMERICA, INC.

    Cylinder Bore Inner Diameter 

    Size Code Inside Diameter
    A 72.00 - 72.01 mm
    (2.8346 - 2.8350 in.)
    B 72.01 - 72.02 mm
    (2.8350 - 2.8354 in)
    C 72.02 - 72.03 mm
    (2.8354 - 2.8358 in.)