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I have a water pump which draws water from a creek to irrigate the lawn. It had run for four months without problems. Starting last week, I notice that the pump would draw water for few hours only. Then, it would stop drawing, though still running, water. I turn off the pump, wait till the next morning, turn on the pump, and it would work for few hours before stopping drawing water again.

What could be the problem?

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  • It sounds as if it might be losing it's prime. Is the water supply sufficient to maintain the flow demanded by the pump? Water level may have dropped or blockage occurred. – HoneyDo Feb 11 '20 at 4:28
  • Also, a little more info would help. Is the pump filling a cistern? how is it irrigating the lawn? Sprinklers? Is it pumping up an elevation or is it relatively flat? – HoneyDo Feb 11 '20 at 4:54
  • The water is fed to sprinklers through pipes. Elevation is less then 5 feet (calculated from the water lnlet in the creek to the sprinklers). Should I check inlet pipe for clogging, though there is no reason why it would be clogged. – joehua Feb 11 '20 at 6:19
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    SE unlike forums or other Q&A sites requires askers make a reasonable effort to solve the problem before asking, and show the work they did do. Please do that re: walking over there and inspecting the physical plant out at the creek. It's a natural watercourse, change is in their ... Nature. – Harper - Reinstate Monica Feb 11 '20 at 13:11
  • I replaced the pump with a new one, which works fine. So, the old one is damaged. Will send it to be repaired. – joehua Feb 12 '20 at 10:32
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You may have leaves or water creatures plugging the intake and the pump is overheating and shutting down. My farm used to have a 30 hp pump as I have water rights and every week or two I would have go pull the foot (a check valve in the water with a screen around it) and scrape off leaves and salamanders that got stuck. I now run a smaller pump with the same foot valve and screen and it doesn’t draw hard enough to plug up like it did with the big pump. So I would check for restrictions as that may be overheating the pump and a thermal safety may be protecting the motor.

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  • There is nothing on the intake filter except mould. I cleaned the filter. It did not help. – joehua Feb 12 '20 at 5:09

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