My house came with about 10-12 sprinkler heads connected to one zone for the front lawn. It is close to the water supply (at driveway), even though most people would say there is too many heads.. It used to work somewhat reasonbly. I only noticed one or two heads not popping up, couple months ago.
Today I noticed about 4-5 of the heads that are further down stream, are not popping up. I removed one of these heads and let the water run, and the pressure is weak on those head locations. It seems like the pressure suddenly dropped somewhere in the system, causing the heads downstream to no pop up.
The main question I have is that when I turn the knob of the valve, after a turn or so, the water flow does not appear to increase, is this normal, maybe the valve is damaged and I'm not getting full flow. (I have been turning the knob a bit)
Or I might have a crack somewhere, I do not know the routing of the system so I might have to dig around a bit. I also wondered if there was a rock/debris or something stuck in the system. Which I might need to unearth the pipes to check Or perhaps the water company doesn't have enough pressure lately?
Which should I look into first? I wanted to do a complete re-installation using bigger pipes eventually and less heads, but if I fix this I can wait until next year.
TIA