Piston Ring-to-Groove Clearance

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

Illustration	Tool Name	Tool Number
	Feeler Gauge Set	303-D027 (D81L-4201-A) or equivalent

NOTE: Refer to SPECIFICATIONS .

Inspect the piston for ring land damage or accelerated wear.

Fig 1: Identifying Piston

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.