Quote:
Originally Posted by Flybob
You could have a small grain of sand etc in the check valve.Try opening both hot and cold water full flow and let it run for a minute then shut off quickly. Might clean it out.
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We had friend today and the prob was so bad that he couldn't get and hold a prime. Before pulling the pump out he hooked up to city water. Then off and on several times with the street pressure and then in between, the pump and we blew the sand or whatever Out.
I replaced a pump one day, without being so creative, just because it didn't pull up a prime. Wish I had thought it through better that day.