I had the same issue on my 87 Dodge D250. Replaced the manual fuel pump. Still didn't start. Then installed an electric pump. Still no flow. Dad ended up putting the pump on backwards to see if I had any leaks in the lines. Found leaks on the fuel sending unit from dry rotted hoses. So I dropped the gas tank, and found the strainer on the fuel sending unit gone and the fuel pickup line full of rust. Had to replace the fuel sending unit and flush the line with ChemTool and an air compressor. Strangely, I didn't find any rust in the gas tank.
I'm wondering if you had rubber fuel line all the way back to the tank or rubber at both ends and steel line in between? ALso, how much air pressure did you use?
@@JeffsAuto Thanks. I have an '82 T-Bird that's been sitting for 16 years and the fuel line is totally blocked. I was looking for the best approach to the problem which led me to your video.