Valve - Spring Strength

Special Tool(s) 

Fig 1: Identifying Special Tool

Courtesy of FORD MOTOR CO.

1. Use a Valve/Clutch Spring Tester to check the valve spring for correct strength at the specified valve spring length.
   • If out of specification, install new components as necessary.
   Fig 2: Measuring Valve Spring Strength

   Courtesy of FORD MOTOR CO.