After running my 47 6cyl for a while and it gets very hot under the hood, the engine gets starved for gas and dies out. In most cases, I have an auxiliary electric fuel pump I can switch on and it seems to smooth out and will run okay 90% of the time. On hot days like today (90 degrees) it is not enough to keep the truck running and the engine dies. In most cases after sitting for a while and cooling down it will start right up and I can continue on my way. I know "vapor lock" gets blamed on a lot of things but in this case, I am not sure what else it could be. The rubber fuel line is hot to the touch under the hood and so is the carburetor. Short drives I typically don't have any problems but if I travel any distance this happens. Could the gas be getting too hot in the carb bowl.
I have a new gas tank. New mechanical fuel pump. New copper/nickel fuel line. Just the last one foot going to the carburetor is rubber. Newly rebuilt carburetor.
Any ideas?
Last edited by dgrinnan; 07/04/2025 7:20 PM.
