Valve Spring Strength

Special Tool(s) 

Fig 1: Identifying Special Tool(s)

Courtesy of FORD MOTOR CO.

1. Use a Valve/Clutch Spring Pressure Gauge to check the valve spring for correct strength at the specified valve spring length.
   • Refer to the appropriate ENGINE article for the procedure.
   • If out of specification, install new components as necessary.
     Fig 2: Checking Valve Spring Strength

     Courtesy of FORD MOTOR CO.