Valve - Spring Strength

Fig 1: Special Tool(s)

Courtesy of FORD MOTOR CO.

Use the special tool to check the valve spring for correct strength at the specified valve spring length.
- See SPECIFICATIONS for 3.0L engine or SPECIFICATIONS for 3.9L engine.
- If out of specification, install new components as necessary. See 3.0L V6 VIN S or 3.9L VIN A .
Fig 2: Measuring Valve Spring Strength
Courtesy of FORD MOTOR CO.