If they work fine at some point, then you have enough water the valve isnt fully opening, if you find a spot where you layed pipe for that zone before sprinkler heads, dig it up, and cu the pipe....turn on the valve...if there is full water coming out (alot of force and flow) then it lays within the sprinkler heas, funny pipe, or line......if you dont have enought flow when you cut it, and then you turbn on the water and you get alot of flow out of the cut pipe you know its the valve........let me know what you think
Hope that Helps!
Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers
Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers