sounds like unless the valve is bad, you are seeing the remaining water in
the line leak out the sprinkler head.
Run the sprinklers, shut them off and watch the leak. If it stops after a
while, that's probably what's happening.
Cheers,
cc

"blah" wrote in message
...
i noticed one of the sprinkler heads leaking when the water is off.
the system still waters fine but that head seeps when everything is
off. i thought i just needed to replace the one head so i removed and
capped it. when i capped it the other two heads in the zone started
seeping(more of a fast leak...spray up a little). the leak seems to
come and go...if i turn if off and on a few times it may stop leaking
but only start up again next time its used or what not. the sprinkler
system was self-installed by the previous owner and i don't know where
anything is under the ground. what could it be?

thx