I found that the nozzles get clogged with something but never found anything. Tried disconnecting the hoses and reverse flushing the drivers side with garden hose helped a bit but, had to use a wire to clear it. It now works but I messed up the spray pattern when clearing the clog. A month later the passenger side is clogged solid. I will try again. Anyone know how to replace those nozzels and or how to flush the dirt out of that drain hose from the catch tank under the nozzels and wiper blades?