1974 F100\360 CI.\Edelbrock intake,Edelbrock carb. Truck cranks and runs fine until it gets up to temp. On hot restarts it takes a lot of gas pedal pumping to get it refired.After it starts up it runs and idles fine. It has a see thru fuel filter before going to carb. I need to mention the intake & carb are new. I raised the hood and see the gas in the filter bubble for a couple mins. I've had people tell me that the fuel line is getting too hot & some say I need a carb spacer cause the carb is getting too hot. Anyone run into something like this before? The water temperature is running normal \not running hot. Thanks for the input. Kenny.😣

 

FWIW, I think all of the carburetor cars I have had that had aluminum intake manifolds, had an insulating spacer under the carb. I assume your truck would have originally had a cast iron intake?

Gas with ~10% alcohol in it seems to have caused a lot more vapor-locking or boil-off problems then when it was 100% gas.

Long ago I had a new VW with the Bosch CIS mechanical continuous fuel injection system on it. It hot-started fine. Then over a year or so started having problems re-starting when hot after sitting a while. Gas bubbles formed in all of the injector lines as the pressure bled down. The gas type had switched from 100% gas to having alcohol as a part of it. There was one brand of gas left for a while that still was 100% gas, if I used that exclusively, no problems. Switched to other, problems. Just to show how touchy gas became. Later electronic FI vehicles were designed for it.

I also had a 4 barrel big-block Olds that had a 3-port fuel pump. One in, one out to carb, one small out that went to a line back to the tank. So some fuel was always cycling around to cool the fuel pump. No matter how long I idled that car stuck in hot summer traffic, it never started missing due to vapor lock. Was great.

 

Thanks Torky. I ordered a spacer from Summit Racing. Going to see if that helps.

 

Installed the spacer. Problem solved. Thanks.