[Marv]

Henry I had a problem similar to that with a 79 Bronko. To make this short, Ford put a screen on the suction tube in the tank. It was made of some form of man made material and the gasohol for lack of a better word melted it. The pump would suck it shut, but you could blow into it. When I found the problem, I through the screen away and drove it approximately another 100,000 miles without any trouble. I know your Ford did not come with one, but maybe someone installed one.