Slow Fuel Fill up

[jcronce]

I have a 2007 Toyota Yaris. For the past several months I have been experiencing very slow fuel fill up. I have to barely hold the pump on. If I go any faster, gas comes up the filling tube and shuts off the pump. It would seem that I have a plug in the tank venting system somewhere. I live down a dirt road and noticed that the small vent holes near the fuel port (above the driver side rear tire) have dirt plugging some of the holes. I did my best to clean it out but it's in a difficult location. If I knew how to remove the air hose that goes to the filling area, I could blow it out. The design of cover and the venting area is poorly designed for folks that live down a gravel road. Is there a tool available that removes that hose from the box (unknown component) that it connects onto?