Hi there,

I have an irrigation system in my garden with 7 zones. The solenoid valves and the irrigation controller are new. Irrigation was already in place when I bought the house, so I don't know where the underground pipes run.

When I open one of the zones, no sprinkler pops up. I don't know if the pipe is clogged or if the sprinklers were removed or just don't work. Digging in my garden is very difficult because the soil is very stony.

Is there any technique, trick or machine that will allow me to track the underground pipe in that area? I would like to rehabilitate it.

Thanks! 

Any comments are welcome.

Regards,