Once the installed height has been established you can use a spring pressure tester to determine the state of the springs. Obviously, this method of monitoring spring life by comparing pressures ...

To keep a check on spring pressures, you will need a reliable valvespring pressure checker. An on-head checker means you only need to remove the valve covers to perform your check.

Excessive spring pressure, defined as more than required to provide adequate control, can also cause prematurly wear rates in the cam lobes, rocker, and valve tips.