I don"t think you have air in the system if it starts and then dies. I think you have a problem in the return line. If the pump can"t return fuel to the tank, which it returns more at idle, it builds pressure up internally and quits pumping fuel. Remove the return line at the injection pump. Start it and see if it runs then. If it does then you have a blockage in the return line/system. Remove the fuel cap and blow air through the return line and you should hear a good steady flow. I had a 4020 drive me nuts this spring. It had restriction in the return system. I finally went fitting to fitting checking if I had flow. I found a piece of rubber stuck in the elbow at the tank, came out of the injection pump which was what I was replacing. Removed it and all was well.
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Today's Featured Article - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
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