Piston Ring-to-Groove Clearance

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

SPECIAL TOOL DESCRIPTION

Feeler Gauge Set
303-D027 (D81L-4201-A) or equivalent

NOTE: Refer to the appropriate Engine article for the specification.

Inspect the piston for ring land damage or accelerated wear.

Fig 1: Identifying Piston With Ring Land Damage And Accelerated Wear
Courtesy of FORD MOTOR CO.
Using the Feeler Gauge Set, measure the piston ring-to-groove clearance.

Fig 2: Measuring Piston Ring-To-Groove Clearance Using Feeler Gauge Set
Courtesy of FORD MOTOR CO.