Since I am sitting on the side of the road waiting for a tow truck right now, I figured I would get some help diagnosing the problem. I have a 1988 F250 with a non-turbo IDI 7.3. I was at a salvage yard earlier driving up a steep hill and the truck died. It shows 3/4 of a tank. I sprayed some gasoline down the intake and the truck fired up. I drove to a gas station as I was pulling in it died again. I coasted to a gas pump sprayed a little bit of gas down the intake it fired up and ran again. I got to the intersection about to turn onto the Interstate and it died once again. Any ideas?