I have an in ground pool with a pentair whisperflo wf-23, 3/4 hp pump.
Right now the pump runs, shaft spins, water churns, but it won't move the water.
I pulled it apart to check the impeller, it looks fine. The shaft spins freely by hand and it also spins when the pump turns on. After pulling it apart and looking at the impeller I filled up the filter, filled the pump to prime it like I always do, it draws very little water through the suction lines, doesn't full up the basket, and the overheat switch kicks the pump off.
I don't believe it's a prime issue or a leak issue. The impeller looks fine. I'm wondering about the run capacitor. Can it be "weak" and not allow the shaft to spin fast enough, or do you think I'm looking at another issue?