Can the lines be "blown out" with an air compressor? or will that do more damage than good? I still have no DC pump water (since the spring rally). I've been so busy and it's been so hot I've just been putting it off. I did take the pump out, hooked it up to a battery in the workshop, and it pumped water. As soon as it started, though, I disconnected the battery to keep from getting my shop wet. When I re-installed it, nothing but noise. I may try to cap off the city water this weekend. That does sound like a possible cause.
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