Piston - Diameter

WARNING: This page is about a different car, the 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Ford Crown Victoria. 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 at the point indicated. Refer to ENGINE 4.6L 2V or ENGINE 4.6L 4V .

If out of specification, install new components as necessary. Refer to ENGINE 4.6L 2V or ENGINE 4.6L 4V .

Fig 1: Measuring Piston Diameter 90 Degrees From Piston Pin
Courtesy of FORD MOTOR CO.