XJ (X350) V8-4.2L (2005)
Piston: Testing and Inspection
Piston Ring-to-Groove Clearance
Piston Ring-to-Groove Clearance
1. NOTE: The piston ring must protrude from the piston groove. To determine the piston ring clearance, insert the Feeler Gauge right to the back of
the groove, behind the wear ridge.
Using the Feeler Gauge, measure the piston ring clearance.