Piston - Ring-To-Groove Clearance

WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the piston for ring land damage or accelerated wear.

Fig 1: Identifying Piston Ring Land Damage Or Accelerated Wear
Courtesy of FORD MOTOR CO.
Measure the piston ring-to-groove clearance.
- Refer to the appropriate ENGINE article for the procedure.
- If out of specification, install new components as necessary. Refer to the appropriate ENGINE article for the procedure.
Fig 2: Measuring Clearance Of Piston Ring-To-Groove
Courtesy of FORD MOTOR CO.