[Mib2nd]

I think you are on the right track. Some voltmeters have the ability to test the caps.

The second thing you want to confirm is that there is a pressure relief system of some sort to relieve pressure on the pump when it starts. If you don’t have such a system, the pump tries to start against head pressure and that is no bueno. Many owners have removed the original system because it is/was a notorious leak.

It does not appear to have any kind of pressure relief on it.