Operation CHARM: Car repair manuals for everyone.

Piston Ring, Engine

Piston Ring clearance








Inspect the piston ring groove clearance.
Using a feeler gauge, measure the clearance between a new piston ring and the wall of the ring groove.





Inspect the piston ring end gap.
Using the piston, push the piston ring a little beyond the bottom of the ring travel, 110 mm (4.33 inch) from the top of the cylinder block.





Using a feeler gauge, measure the end gap.





Standard end gap





Maximum end gap