Repair Procedures: Inspection: Piston

1. Using a gasket scraper, remove the carbon from the piston top.
2. Using a groove cleaning tool or broken ring, clean the piston ring grooves.
3. Using solvent and a brush, thoroughly clean the piston.
   NOTE: Do not use a wire brush.

Piston-to-cylinder clearance: 

0.035 - 0.055 mm (0.0014 - 0.0022 in)

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

   Cylinder bore diameter: 

   75.60 - 75.63 mm (2.9764 - 2.9776 in)

   Courtesy of KIA MOTORS AMERICA, INC.

2. Measure the piston outside diameter at 13 mm (0.5118 in) from bottom of the piston.

   Piston outside diameter: 

   75.555 - 75.585 mm (2.9746 - 2.9758 in)

   Courtesy of KIA MOTORS AMERICA, INC.

Piston-to-cylinder clearance: 

0.035 - 0.055 mm (0.0014 - 0.0022 in)

1. Check the cylinder bore size mark on the side of the cylinder block.

   Courtesy of KIA MOTORS AMERICA, INC.

   CYLINDER BORE INNER DIAMETER SPECIFICATION
   
   

   Class	Mark	Cylinder bore inner diameter
   a	A	75.60 - 75.61 mm (2.9764 - 2.9768 in)
   b	B	75.61 - 75.62 mm (2.9768 - 2.9772 in)
   c	C	75.62 - 75.63 mm (2.9772 - 2.9776 in)

2. Check the piston size mark (A) on the piston top face.

   Courtesy of KIA MOTORS AMERICA, INC.

   A: GRADE MARK

   M: MPI

   6: 1.6 L

   PISTON OUTER DIAMETER SPECIFICATION
   
   

   Mark	Piston outer diameter
   A	75.555 - 75.565 mm (2.9746 - 2.9750 in)
   B	75.565 - 75.575 mm (2.9750 - 2.9754 in)
   C	75.575 - 75.585 mm (2.9754 - 2.9758 in)