1995 Buick Riviera Wiper fluid

Before chanig hoses, try takin some thin wire, like package tag wire an drunning that in and out of the sprayer a few times. Alot of times they jut get clogged up and don't work. If you are in a northern clime, then if it is very cold out wait until yor car has warmed sufficiently warmed up and see if the underhood temp will let them work better. IF that is the case then don't mix your wiper fluid with water as it's freezing in the hoses.