1991 E-150 dual tank, won't start. Squirting gas

If your fuel pump is in the gas tank the fuel pump is cooled and lubricated by the gas. If you run out of gas and keep trying to start it many times you can damage the fuel pump. If you have a older car you can try putting a little gas in the carburetor and see if it cranks, if it cranks with gas in carburetor you know it is a lack of fuel problem. You might try spraying starting fluid in air filter but to much can damage your engine. Some links below may provide some help.
https://www.yourmechanic.com/question/car-won-t-start-after-it-ran-out-of-gas-and-was-filled-again
https://www.bimmerforums.com/forum/showthread.php?1881026-Ran-out-of-fuel-now-won-t-start-please-help!
Your vehicle fuel pump can run and pump gas but depending on your vehicle you may not have enough fuel pressure to run. I would check your fuel pump fuse and relay and fuel inertia switch/fuel pump kill switch if you have one. I do not know why running out of gas would cause them to fail but it is something to check.

Fuel filter. Cracked hose from fuel tank to carburetor. bad gas, sludge inside the carburetor stuck float. Clean the carburetor first, then look at the entire fuel path from the tank to the engine.

Assuming that the engine can be turned over with the starter, the most likely culprit is it's not getting enough fuel, especially if it's been sitting for 6 months or more. AT YOUR OWN RISK, remove the air duct after the air cleaner and pour a shot-glass full OR LESS of gas directly into the carburetor or throttle body. It should start and at least run briefly. If it does, then add at least 3-5 gallons to the fuel tank. If you've run out of gas, then adding just one gallon is not enough. Today's fuel-injection systems have pressurized fuel lines which need at least a gallon just to fill all the pumps and filters between the tank and the engine. Good Luck, TechJoel

have you checked to see if you have spark? Your ignition control module could of went bad in the distributor, its a $29.99 part at autozone.

If you have spark, check to see if you have fuel, is there fuel squirting into the carburetor when you look in it and work the gas?

I have no idea what you are asking. Start with are you getting fuel . Can you here the pump in the tank for about 5 seconds after you turn key on? Look down where carburetor would be is gas squirting in there when you turn the key and crank. Take off a spark plug wire off plug put an old plug in the wire brake of the bottom electrode and hold it 1/4 inch away from an engine bolt or ground and have some one crank engine should have blue spark.

You have two filters in the system. One is in the fuel inlet on the carburetor, the other is the "sock" inside the tank. If either is plugged, no fuel will flow. Also examine the fuel line. Unlike an injected system, a small hole in a line often won't leak a lot because the pump pulls fuel. A hole will allow air to be pulled in instead of squirting out fuel. First, remove the line from the carb and attach it to a hose and crank the engine. After cranking, you should have about a pint or fuel in the catch container. If not, check line and tank filter. If you have fuel, check carb filter. On Chevy engines there is a rod inside the engine that operates the pump. You did make sure that the rod was up and the pump arm is actually being activated by it?

Try squirting a small amount of gasoline into the intake to see if the engine fires up. If it does, then the fuel pump is probably burnt out. Also, check all fuses, and inspect the fuel pump wires.
Matt

You need to attach a pressure gauge to the schrader valve and measure the fuel pressure with the key on and also while running. You need to see about 40 lbs in both cases.

HAVE YOU TRIED CHECKING THE FUEL PUMP RELAY

the easiest way is to take off the air filter top, and have someone turn the engine over while you SLOWLY (like out of the air hole in a gas can) pour gas into the carburetor (carefully...) have them press slightly on the gas pedal. It could take a couple minutes of pouring, but It will prime the gas lines. Stop when it will run on its own