Originally Posted by Rambler1
One quick thought. It may be my pump sticking because it didn't start filling until I turned on pump along with city water hookup. That's when In notice the tank increase but I didn't hear pump cycling??
Thanks to all
The pump (whether cycling or not) can't fill your tank; it pulls water FROM the tank, so IF it was running, it would simply pull from the tank and put the water back into the tank. The pressure introduced by the city water hookup could, however, be leaking back through the pump's check valve without ever causing the pump to cycle. It's possible that using the pump introduced some piece of foreign object from the tank (a piece of sand is all it would take) into the valve. In which case, running & cycling the pump a few times after turning off the city water might dislodge it.