last night i noticed the pump to our shallow well would keep coming on periodically even when no water was being used. today i went in the cellar to check it out and unplugged it...I could hear a slight air leak. know the pump will not prime, every time its full it burps a air bubble up and i can just keep adding water and it will do this over and over and never fill, just lets out the air bubble and drops back down. what should be the first thing i should look at. Im not to failiar with wells and pumps but very mechanically inclined...its gonna be a long night!