Cannot get a Gould GT15 to build pressure.

[Michael B. Fields]

We took our pump out of storage and set it up. We have the intake line in a cage with netting to filter out algae and aquatic plants submerged in our pond. I have a check value on the intake end of the pump. I primed the pump as I have in passed years but I cannot get the pump to maintain pressure. I run the pump and then open the ball value to a hose and I get a blast of water and air then it quickly becomes spurts of water that do not squirt but a few inches? It will not maintain pressure.

[Thomas]

Did it freeze in winter? Where are you?

[Dean Hoffman]

Try opening the ball valve just part way. The pump will have to push constantly and not quickly spit out the water you put in for priming.