Originally Posted by adwriter73
My water pump stays running after all faucets are closed. I understand that this is because the system can't fully pressurize. I've checked everywhere, and the only thing I can think of is the overflow vent on the water tank might be causing it. But how could the tank ever pressurize if there's a vent?
The water tank, never ever is pressurized.
Your water pump, if it has diaphragms, needs to have them replaced.
Also, it could be the pressure cut-off switch is now defective.
Shurflo pumps are not know for longevity.
Replace the pump.