I have the Jandy 3 way valves. When I move it toward the main drain being off, I get lots of bubbles in the pump basket...not enough to lose prime but there is definitely an air leak. When it is open (both skimmer and main drain on), or just the skimmer off, I have no issues with air bubbles in the pump basket. The baskets are clean at both the pump and skimmer, and the water level is good.
I checked the grease cap on the valve, and the inside part has partially broken off inside the valve, but is mostly stuck inside the cap...it is literally hanging on inside the valve with two pieces of plastic! I don't want to take it all the way out until I get the replacement cap so I can continue to move water. My questions are:
1. Once I get the replacement part installed, do you think this will fix my air leak issue? What else should I check?
2. Do these caps and inside pieces break often? Should I order an extra few to keep on hand? I saw that one seller (maybe on eBay) stated they are a discontinued product...didn't know if I should stock up.