Question
I have an old Toro 4 zone hydraulic system in my yard.  2 of the stations do not water when turned on at the controller. I can hear the water flowing, and I have tested the lines coming into the controller to ensure water flows.  I assume I have valve problems.  Any ideas?

Answer
Hi Steve,

You can open and clean the valve, but I always found I have to replace it. BTW be sure the water gets to the valve, disconnect the micro tube and turn on the zone, you must have water flowing, if not look for any damages along the micro tube path.

Regards

Guillermo