Piston - Diameter

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Measure the piston diameter 90 degrees from the piston pin and 42 mm down from the top of the piston at the point indicated. Refer to the appropriate ENGINE article for additional information.
- If out of specification, install new components as necessary. Refer to the appropriate ENGINE article.
  
  Fig 1: Measuring Piston Diameter
  Courtesy of FORD MOTOR CO.