Hi there, I have an old aqudare deep well pump. We had a power cut during the night and the pump switch shut off and the pressure got used up. Now the pump has lost it's prime. I closed the valve at the head of the pump. Opened the pressure gauge to pour in water. There is an air sound and water keep's flowing out of the top. When I start the pump the needle jump's for a second then drop's. Any suggestion's ?

