Quote:
Originally Posted by Michigan Farmer
If it's only one head you'd think more would be acting the same if it was a lose solenoid, but it may. More often than not it's just gravity draining the lines from up hill but that would stop after some time.
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If the heads are pop-ups, it takes a certain amount of water pressure for the head to pop up. It could be that the other heads are not getting enough pressure to pop up.