Hello Dogwood,

You say you checked the hose line. This leads me to
believe that you are referring to Micro-Jets so I will work
from that assumption. Mico-Jets are three different parts
put together to form this spray type head.
From bottom up.
connector...connecting riser stem to drip line.
riser stem 8" or 12"
base orifice (different colors indicated different gallonage/distance)
Spray cap (pattern cap) 90degree 180 degree etc.
usually when these are not operating correctly you can
simply remove the very top cap and clean the base.
The unit may look as if it is one piece but is two distinct
parts.
Hope this helps.