My sprinklers acts like they don't have enough pressure when they are turned on. If I start closing the heads, from the upper part of the lawn down to the lower part, the pressure seems to build up high enough for the rest of the sprinklers after the third one gets closed.
Now, If I go back and open all the sprinklers, then they all start running fine. I would think that if there was not enough pressure to run the system, then when I reopen the top 3, the other ones would lose pressure again, and the ones that I reopen would also be experiencing the low pressure. But instead it's like doing that little procedure of closing then reopening fixes the problem. Does anyone have any ideas?