Long time reader, first time poster. I opened my pool this weekend, used a net to get most of the big stuff. Got the pump running, and started to vacuum the leaves and other debris off the bottom. I removed the vac plate from the skimmer basket to empty it, tried to vacuum more, and pump lost prime from sucking air when removing vac. I tried everything (I think) to reprime the pump, and it won't. I blew the lines out with air to see if anything got behind the skimmer basket while emptying. I replaced o-rings on the pump plugs, and resealed all other fittings. I tried to get the pump going with just the skimmer line, just the bottom drain line, and both. Nothing seems to help.