How do you unblock windscreen wiper sprays?

Answer:

Make sure the pump is working and water is actually getting to the spray nozzles. Simplest solution would be to disconnect the little rubbber water hose, either at the spray head, or where it exits the pump, and then blow compressed air into the tiny spray nozzle. That should blow out any debris that may be plugging the hole back out the way it came in (I prefer to use "canned air"(the kind they use to clean computer keyboards and other electronics). Good luck.

First answer by Bob811. Last edit by Bob811. Contributor trust: 1149 [recommend contributor recommended]. Question popularity: 20 [recommend question].