So I've got a bit of a weird one I've been fighting with, the sprayer for my wiper fluid refuses to work, I've replaced the motor, cleaned the plug, and tested the plug for proper voltage/power and checked the fuse the wipers are a part of, but when I try to spray nothing comes out. I did check the actual plastic bit on the hood, it works, and there isn't a tear, leak, or clog in the rubber hose, so I'm a bit frustrated on why it won't spray. Anyone got any ideas?
Have you checked the actual tubing for blockages? And/or the nozzles themselves?
Trace the rubber line from the pump to the sprayer nozzle; you will find a fitting inline which is a check valve. I found that the previous owner of my Jeep had installed the check valve backwards and this stopped the fluid from moving when the pump was turned on.
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