<HTML>1) Find out the sprayed mouths of you car and use a needle (or small stick) to poke the hole. They may be blocked by something. This happens in a winter time frozen by snow or ice.
2) Check the hose to the sprayed mouths or another end if dislocated. The fluid can not go through.
3) Check if there are holes in the hose. Since the whole thing depends on vacuum, the hole will leak air and the fluid.
Good luck.</HTML>