Thanks guys, First the top water hose never builds pressure or gets hot (I Suspect it is during the occasional burbbling/cooling episodes its since i'm driving I can't check). I don't think its a blown head gasket and it never cools even with lots of cool water.
Next...........can the heater control valve prevent the whole system from recieving water?? And if so where is it located and what does it look like??
Thanks for all the assistance in advance
Alex