WATER PRESSURE SURGING PUMP ON AND OFF

[REBECCA]

HELP!! MY PUMP IS SET FOR 40 AND 60 PSI. IT COMES ON AND SHUTS OFF WITHIN SEVERAL SECONDS AND BACK ON AGAIN. MY PRESSURE/BLADDER TANK HAS WATER AND AIR IN IT I BANGED ON THE SIDE TO LISTEN AND IT SHOWS 32PSI. PLEASE HELP I CAN NOT FIGURE IT OUT AND I HAVE FIXED MY OWN PUMP FOR 10 YEARS. I CAN FIND NO LEAKS. IF I SHUT OFF THE WATER TO THE HOUSE THE PUMP HOLDS ITS PRESSURE. ONLY WHEN I USE THE WATER DO I HAVE A PROBLEM