[madmaxx]

It appears the fuel is boiling out of the carburator on my two engines. I have always been told a non metallic spacer between the manifold and carburator will aid in reducing the symptoms. I guess as long as you have hood clearance there is no down side. All my marine engines had them and yet some of them still vapor locked.

I guess with an electric fuel pump and recirc line in reality you are using the gasoline to cool the carburator as it recirculates from the tank to the carb.

In my opinion electric fuel pump suk on a carburated engine. They are noisy, fail, require unique locations so as not to loose their prime, need additional equipment such as regulartor and a power source. I would rather deal with vapor lock then the headaches associated with a "cool" noisey electric fuel pump.