Piston Ring-to-Groove Clearance

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. 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 Ring Land Damage And Accelerated Wear Area
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.