Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Piston Ring-to-Groove Clearance




Piston Ring-to-Groove Clearance

Special Tool(s)






General Procedure

NOTE: Refer to general specifications in Engine for the appropriate specification.

1. Inspect the piston for ring land damage or accelerated wear.





2. Using the Feeler Gauge Set, measure the piston ring-to-groove clearance.