Jet pump

[Kevin150]

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I have an electrical question/pump question
I have a 1hp eco jet pump and a tank . It just sucks water from the tank and pushes it back into the tank about 4” below water level . Pump intake is level with bottoms of tank so pump is allways primed with water . The issue I have is if it sits say over night and I go to start in morning it surges and bunch of times before it fires up pump ( sounds like it’s struggling ) after pump fires I can shut off and start it like normal no surging . One time it surged so much it tripped overload switch on pump . I have the power running through a gfci and it has a switch to turn pump on .

Know if I by pass switch / gfci in the morning and just plug right into an extension cord it will fire right up without the surge.
Any advice would be appreciated
Thank you

 

[Valveman]

Sounds like you have an air leak. Must be a check valve on the discharge side of the pump. With a single check valve on the suction side of the pump, a leak will cause the pump to come back on, but not let air in the system.