Can you hear it making noise and trying to work when you try to spray? Check the spray pump, make sure the wires are attached. Then check (two man job) with a voltmeter that the pump has 12 volts when trying to operate the sprayer. If so, then check for a loose line, but you'll probably see it squirting if this were the case. Then you can unhook one of the tubes going to the squirter in the hood and attempt to spray, this will let you know if your nozzles are clogged. Make sure the tank under the hood is totally topped off to start with too. Let me know what you find. Thanks!