Originally Posted by Old-Biscuit
Pump should kick on within just a few seconds of opening a faucet
As suggested above
Got an accumulator tank...then air pressure is set to high (should be 3# above pump start pressure set point) or bladder between air & water chambers is bad
No accumulator tank...then pump pressure switch is hanging up or set way to low
Which Pump (Brand/MODEL) do you have?
45# pump...start pressure s/b 30#
55# pump...start pressure s/b 40#
Actually, the tank pressure should be 2-3 psi BELOW the cut-in pressure of the pump. Otherwise, the tank forces all the water out of the reservoir before the pump starts to run, and you’ll get an annoying interruption of flow each time the pump cycles.