[makocc21]

I have a 10 year old well water pressure tank that is losing pressure. I first noticed that my pump was short cycling. It started cutting on and off every few seconds. I drained the pressure tank and re-filled it with air to 38psi. Every thing stays fine for about two days and then the pump starts to short cycle again. I am assuming that the pressure tank has gone bad and I need to replace it. Is there anyway of testing the tank or could there be another cause to the loss of air pressure in the tank?

[hkstroud]

When pump starts short cycling, press the needle of the air input valve, if you get water instead of air you have a ruptured bladder. The air is not leaking out, it is being absorbed by the water under pressure. The bladder prevents that from occurring. You pressurized to 38#, I assume that your pump switch is set to come on at 40# and go off at 60#.

When pressurizing tank it should be done with the tank empty of all water.

[speedball1]

Great advice by Harold! If you shut your pump off and the pressure gauge falls then I would suspect the foot check valve. Determine where your valve is located and have it checked. Good luck, Tom