Valve - Spring Installed Length

Measure the installed length of each valve spring.
- Refer to ENGINE- 3.8L & 3.9L or ENGINE- 4.6L (2V) or ENGINE- COBRA 4.6L (4V) or ENGINE - MACH1 4.6L (4V) for the procedure .
- If out of specification, install new components. Refer to ENGINE- 3.8L & 3.9L or ENGINE- 4.6L (2V) or ENGINE- COBRA 4.6L (4V) or ENGINE - MACH1 4.6L (4V) for the procedure .
  
  Fig 1: Measuring Installed Length Of Each Valve Spring
  Courtesy of FORD MOTOR CO.