Water pump/no pressure?

[chast]

Hi all--'97 RT170P. All was well with the water system until I decided to install an anode rod. Now when I turn on the pump, it runs and water flows, but it will not built pressure (taps off) and shut off. I have checked to see the water heater is full (pressure relief valve) and the pump sounds normal (pumping water) but then goes quiet and keeps running. I suspect air in the lines but can't get the pump to build pressure and shut off. What gives?

[chast]

Thanks all--problem solved. Tried hooking up to city water and letting pump run--no effect. Pump would begin to make a "throaty" sound like it was picking up water then continue to run without building pressure and shutting off. Although I had plenty of water in the tank, I filled it completely, turned on the pump, let the taps run for a few minutes, shut the taps and viola'--problem solved. Pump picked up the prime, built pressure and shut off like it is supposed to. Thanks all for your input.

[2oldman]

chast wrote:
He) and the pump sounds normal (pumping water) but then goes quiet and keeps running.

Not sure I understand this part..

[rav]

can you hook it up to a water connection and let the water run to help get the air out?

[Dick_B]

In the meantime waiting for an expert to respond try opening all of the faucets full blast for 15 seconds to see if that clears the air in the lines.