Seems to be problem with valve for a zone?
Just recently I've had a problem with one zone. Since I bought this house, this particular zone has never worked by using the controller. So I have just been turning the solenoid a 1/4 turn and watering that way. Just in the last week or so, now when I turn the solenoid, 2 of the six or so sprinklers (in the lowest part of the yard) only get a dribble of water coming out of them, the others are bone dry. I also notice that at the same time the sprinklers stopped working, one of the 2 sprinklers that dribbles with the valve on also has a slow leak when the valve is off. I was thinking it could be a bad valve/diaphragm, so I took the diaphragm out. Definitely looks well used, but no cracks or tears and the solenoid exhaust ports were clean on both halves. When I manually turn the solenoid I hear a lot of water going through the valve (sounds like the same amount as when it was working). I'm not noticing any soft spots or anything like that, though. The sprinkler that is leaking when the water is off is close to the edge of the driveway, so is it possible it got run over and busted the pipe below the ground? Really trying not to dig if I don't have to, but I'm thinking it doesn't look good. I'm really not sure which sprinkler is the first or last, but the ones dribbling are the farthest away from the valve if that helps. Any suggestions on where to start or where else to look? Thanks.