I have a sand point now used for watering garden etc it pumps into a 50 gallon steel Duro tank as it has not been used much in last few years perhaps the bladder a problem when used pump kickcs in kicks out rapidly not very much output does bladder need help? The tank has input on bottom output on bottom on the side there is a pressur guage 1/2 way up tank top of tank there is a screw plug
There may be too much water and not enough air in the tank.
Try this. Turn off the well pump, empty all the water from the tank with the air valve open, close the air valve, and turn the pump back on.
The good conscientious technician or serviceperson will carry extra oils and lubricants in case the new pump did not come with oil or the oil was accidentally spilled, so the service call can be completed without an extra visit.