I am wondering if someone can help me out here. I have what appears to be an air leak that I just can't figure out. I see very small bubbles in my pump basket so I don't believe I have a major suction side air leak and no bubbles seen in my return jets. I am also not losing water.
When I turn off the pump motor, I see the water leaving my pump basket immediately. But here is what I can't figure out. If I start the motor again before it loses prime and I shut off the motor again after the pump basket flills up with water, the water no longer drains out of my pump basket! It will hold prime overnight with some air pockets forming in the pump basket.
This behavior has happened a few times now. I have replaced the pump basket o-ring and no vsisible leaks can be seen from the pump housing drain plugs. What could be going on here?