Irrigation valve shuts off immediately
Hello-today I turned on our automatic lawn/garden system for the season. All the stations worked perfectly except one, which turned on, then the valve shut off almost immediately. It is not the controller or the watering time, not the solenoid( did a switch from another properly functioning valve and it still happened), not the valve (I replaced it and it still happens), and I don't think it is the water flow. The only difference between stations is that when this one turns on, there is a lot of air in the pipe, and I sometimes hear chugging as the air/water travel the length of the pipe. This is a 4 year old system and it has never had any problems. I have changed nothing. I have done nothing differently than ever in the past and the water source has not changed (my well).
I hope there is someone who can offer advice that will remedy this puzzling situation before I pull my hair out!
Thanks so much.