Valve - Spring Installed Length

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

Measure the installed length of each valve spring.

Refer to ENGINE - 3.9L & 4.2L for the procedure.
If out of specification, install new components. Refer to ENGINE - 3.9L & 4.2L for the procedure.

Fig 1: Measuring Installed Length Of Valve Spring

Courtesy of FORD MOTOR CO.