Inspection Procedure

Use a Valve/Clutch Spring Pressure Gauge to check the valve spring for correct strength at the specified valve spring length.
- Refer to ENGINE - 3.0L (4V) or ENGINE - 3.9L for the procedure.
- If out of specification, install new components as necessary. Refer to ENGINE - 3.0L (4V) or ENGINE - 3.9L for the procedure.
Fig 1: Checking Valve Spring For Correct Strength Using Valve/Clutch Spring Pressure Gauge
Courtesy of FORD MOTOR CO.