I'm getting nothing from the rear window washer. When I press the button, I hear the washer motor run. I removed what I think is the correct hose for the rear off of the pump and fluid began running out. I haven't checked to see if there is pressure when the button is pressed. How likely is it that I have a clogged line or a kinked line going to the rear? Its a 1998 XLT 4x4 with 4.0 OHV.