'84 Ford Ranger cuts off after about 30 mins of driving.

I have a '84 Ford Ranger with new plugs, plug wires, distributor cap, fuel pump, thermostat, and oil sending unit. If i try to start it when it hasn't been started in a while it will start just fine and will run strong. but after driving it for about 30-45 minutes it will start to choke and cut off and it wont start back up for about 15-20 minutes but i can get it started with a spray of starter fluid but it just cuts right back off and i have kept the engine running by spraying short bursts into the carburetor but when i stop spraying it just cuts right back off.