My pump is keeping its prime and will keep its pressure but when we use enough water for the pump to kick in it does not have enough suction to draw the water in a build the pressure back up so it just keeps running and not pumping any water through.
It sounds like it is a jet pump in a deep well. You probably will have to pull the foot valve and clean or replace it. Because of cost I would suggest getting a qualified repair person to check it out.
SOURCE: Cabin pump, primed fine only goes to28psi and keeps running
Sounds like the injector nozzle is plugged. This nozzle is directly inside the influent line on single line jets and down in the well on two-line jets. I'm assuming you have it primed correctly. If this happened suddenly the it'd definitely the injector nozzle. It it was a gradual process over time then I would say it's either a badly worn nozzle or worn impeller.
SOURCE: jet pump does not pump water
I had a similar problem and as a last resort took the pump apart and cleaned it and the jet. It's a very old pump but works ok now.
SOURCE: My well pump keeps losing its prime. The pump
There may be a slight leak within the suction piping, just enough to allow air to enter as its sits for an extended time. I'd be ceratin the foot valve is good and check over all of my suction pipe connections.
I hope this may have helped,
Tom
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