Since we've had a pretty good few days of weather I haven't need to spray my windshield but I tried today and nothing happened..

I topped it up and still didn't get it to spray.

I have had the car a little under a month and bought it from an infiniti dealer. Should I take it back and get them to clean it out or is there a simple way to get them going?

Thanks.

Can you hear the pump motor run when you try to spray? Or are you sure it's a clogging issue. If there's a warrentee take it back.

I had to have my pump replaced a few years ago...could be your issue.

I am out of warranty. I am not sure if I can hear the pump I'll give it a shot when I'm out there. Will they spray if the car is turned off and just in the third key position (the one before start)

^ just start the car, lol

this system is rather simple, switch~> fluid ~> pump ~> line~> nozzles

if your wipers are moving then switch is good, you topped it for so fluid is good.