HELP! Pressure washer detergent injector not working?

pressure washer detergent injector image

FG

I've got a brand new General Pump detergent injector from Northern Tool. After I hook it up and turn on my washer the water just blasts out of the detergent hose back into my soap bucket?! What could be wrong here? I've got it hooked up in the right direction.. Thanks for any help!

This is the injector I have.
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200336163_200336163

Answer
bad check valve or bad valve on the pressure washer back feeding the soap...take it back.

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