Weird water pump occurence
So I'm getting ready for this weekend's trip, and I fill the water tank. I flip on the pump to purge the air out of the lines. I can hear the pump is running, but it's not making it's normal sound or pitch. I open a tap and nothing--no pressure, no flow. The HWH is full, so it's not like there was an air pocket or anything preventing flow. I open every tap, hot and cold, and nothing, but the pump is still humming. So I open up my winterizing panel, uncap the antifreeze tube (which would seem to allow air to be sucked into the system,) and voila--the pump's pitch changes, pressure builds, and then the pump stops. I open the tap, and I have pressure/flow, pump kicks on again like it should. So what the heck was going on? It's like it couldn't get primed--almost felt like vapor lock on an old carburated V8. Thoughts? Is my pump on the way out? TIA...
2015 XLR Hyperlite 30HFS5 (mods being performed regularly)
2009 Salem LA 292fkds (gone)
Nights- ('12)23 ('13)23 ('14)15 ('15)31 ('16)25
2014 Harley Davidson FLHX (XLR cargo)
2014 VW Jetta TDI (diesel sipper, camping support vehicle)
2011 Ram 2500 CC 4X4 CTD, B&W Companion (toy hauler hauler)