I have a Jandy VS pool pump that suddenly not filling up water after it is done priming. The water level is not low and the skimmer flap door is working as expected. I have the valve open to the skimmer and the main drain. I could see the water coming into the pool pump basket but it seems to lose suction. I replace the pool pump entire gasket lid with a brand new one but that didnt work. I lube the valve intake o'ring with Danco Silicone grease (95% Silicone and safe for nitrite/rubber o-rings) but that didnt help. I turn off the pump and use a hanger to see if the pool pump impeller had something clog but it didnt. Right now as a work around I close the main drain and the pool pump basket seem to hold the water. I am at a lost right now on what could cause the issue for the pool pump not to maintain the water after priming. Any help would be appreciated.