Piston Ring-to-Groove Clearance

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. 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
Courtesy of FORD MOTOR CO.
Measure the piston ring-to-groove clearance.
- If out of specification, install new components as necessary. Refer to ENGINE for the procedure.
  
  Fig 2: Measuring Piston Ring-To-Groove Clearance
  Courtesy of FORD MOTOR CO.