My pump did run dry for a little while, can't say how long, could have been an hour or so before I noticed. I know that it could burn up, but would it still work at all if it had. If I prime it manually, it works fine. Something new though, when I tested it this morning by turning it on, it took a little longer than normal, but after a minute primed and started, however, there is a leak, not on the pipes, but maybe where the motor is bolted to the filter basket holder, is there a gasket there that can go bad, allow air in and/or can be replaced?