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Home >> Mitsubishi >> 2017 >> Mirage ES, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Overhaul >> Piston And Connecting Rod >> Inspection >> Cylinder Block

Cylinder Block

  1. Check visually for scoring, rust, or corrosion. Perform liquid penetrant test etc. to check for cracks. If faulty, replace.
  2. Using a straight edge or a thickness gauge, measure the flatness of the cylinder block top surface. Ensure that no gasket or other foreign matter is attached to the top face.

    Standard value: 0.05 mm (0.002 inch) 

    Limit: 0.1 mm (0.004 inch) 

  3. Check the cylinder bore for scoring or seizure. If faulty, replace.
    Fig 1: Measuring Flatness Of Cylinder Block Top Surface
    G09628449Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  4. Using a cylinder gauge, measure the cylinder bore and centricity. If excessively worn, replace the cylinder block.

    Standard value: 

    Inner diameter 75.0 mm (2.95 inches) 

    Cylindrically 0.01 mm (0.0004 inch) or less 

Fig 2: Measuring Cylinder Bore And Centricity
G09628450Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.