Having carb problem. Truck starts up ok when the engine temp reachs approx. 100degrees the motor stalls.Cools down and you can start it back up, reachs 100degrees and dies. Orginal V8 and carb. Fuel lines are good,filter good,jets working, float is good.HELP

 

sounds like vapor lock. Which means the carb is getting hot and evaporatinng the fuel. It is usually caused by a bad carb insulator or pluged water passeges in the manifold. A real easy check is to fill a couple of zip locks half full of ice water and put them around the base of the carb. If it runs longer you are having vapor lock. This was also a old drag racer trick to get more horsepower. The ice water will cool the air charge resulting in a better fuel/air mix. It could also be a pluged fuel filter but I don't think so since it is temp related and not run time related. The carb insulator on these old trucks was made up of about 6 carb gaskets stapled or glued together. Modern engines usually use a aluminum spacer.
Bob Wood

 

Jed
Since the truck dies. I think it's not a carb problem, Now if after you shut it off it wouldn't start I would think it was vapor lock. I think you might want to look at the condenser and the coil. I've had this same problem and it was a bad condenser

 

Thanks for the reply I'll try the ice water trick today. Jed