sounds like the little  impeller is worn out or has come  off the shaft
depending on the type of pump.  cant find anything that says if this
pump has a one way flow valve to fail.
jimt
westydriver
> When you turn the knob on the faucet, it makes a noise and looking at
> the pump itself, it spins around like it should and i can see a little
> water in the tube but it just seems to go back and forth and nothing
> makes it to the sink. ~Gordy