Valve Stem Diameter

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

Using a micrometer measure the diameter of the valve stems.
- If the measurements are not to specification, install a new valve.
  
  Fig 1: Measuring Diameter Of Valve Stems
  Courtesy of FORD MOTOR CO.