Help with bubbling sprinklers?

Question

We have an older sprinkler system that has never caused trouble. Now, two of the sprikler heads on the same zone are "bubbling" watter (very slow leaking, if you will). Anyone know what is causing this and how I can fix it. Thanks :)

Answer 1

The solenoid that controls that zone may be leaking. Either it is worn out or there is dirt or calcium build up and not shutting off completely. Since it is an old system just replace the solenoid. good luck.