I have a 86 dodge d150. i have replaced the fuel pump, but i am still not getting fuel to the carb. all fuel lines are in good shape. truck only starts( for a minute then dies) when carb is primed.

Fuel filter and the lines could be clogged. Id star by dropping the tank

there are relays, they can over heat and stop working or just wear out over time.

probably fuel filter. there is always sludge or rust or some kind of junk in your tank. when you let the gas get that low you run the risk of it getting into the system. it also could have plugged the screen on your fuel pump or even damaged your fuel pump. but start with the filter, its the cheapest fix first.

sound like you have either a clogged fuel filter or a bad fuel pump
start with the fuel filter first keep it simple first
if that don't work for you then pull your fuel line off and cycle the key and see if the pump is putting out fuel
if you don't get fuel then change the fuel pump
hope I could help
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good luck

have you checked for spark? check all the leads going to the coil from the battery and from the coil to the distributor, if any are loose or faulty it will cause you to lose all power, also check the terminals.

Check all of the fuel lines very carefully for breaks or cracks in the fuel lines, especially between the fuel tank and the fuel pump.

If the fuel lines are all in good condition then you can safely assume that the problem is in the fuel pump and you will need to replace it. (If the fuel pump is in really bad shape the engine oil on the end of the engine oil dip-stick will smell like fuel)

Sounds like vapor lock. In laymans terms the engine heat causes the fuel flow to stop. Once everything cools off the truck starts. Insulating around the fuel line seems to be the solution. Try aluminum foil. Or perhaps a reroute of the fuel line to get it away from direct engine heat.

I had the same problem with my 88 d150 the first time it was the vacum lines and the second time it was the fuel line leaking so check both alos make sure ur fuel pump is working and check ur fuel filter it might be clugged

With the choke almost closed your using the vacumn of the intake maniflod to **** more fuel. This means that your engine is running too lean with the choke open. Why? Possibilities are, Fuel pump output to low, Check by disconnecting the fuel line at the carb (this takes two people) hold the end in a tin can, crank the engine. if fuel flow is good then pump isn't the problem if it's just a trickle replace the pump and the filter and you should be good to go. Other possibilities are clogged fuel lines. On an '86 I'd replace them unless they are stainless in which case I'd just blow them out with compressed air. Pinched fuel line, look for crushed areas or kinks, clogged fuel filter, should be an in-line filter near the carb on an '86. Other than that your carb might be set up wrong or in need of a good cleaning ang rebuild. I'd start by inspecting the furl lines and flow and go from there. Sounds like a fun ride! Good luck with it!

ok ... it could be that the carb is so gummed up with old fuel that none is getting into the engine..... some trouble shooting will be involved if you buy the vehicle