The return line to tank is clear it will run a steady stream of fuel from the tank if disconnected from the pump. Also the tank is vented fine. Is there supposed to be a check valve in the fuel return line? If so is it at the T on the bottom of the tank or in the injection pump itself? To me it seems like what is happening is that when the return line is connected to the pump the pump is somehow getting extra fuel back from the tank and revving, is that possible?
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Today's Featured Article - Farmall 460: That's My Girl - by LeAnn R. Ralph. How many sounds can you think of that are as familiar to you as your own breathing? What about the hum of your refrigerator? Or the thump of your clothes dryer? Maybe the engine of your car? You hear those sounds every day, and you don't think much about them, do you. I can think of a few common, ordinary sounds in my daily life, too.
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