Quote:
Originally Posted by Kenth
I have found fuel "drain-back" thru fuel inlet is a myth.
Fuel evaporation is not, as the carb is 100% vented to atmosphere.
It was always the case then and more so now with todays fuels aimed for closed fuel systems and fuel injection engines.
FWIW
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So, when enough fuel evaporates or leaks from the float bowl, the needle valves open and some fuel may come in until the fuel pressure goes down. Then it seems like fuel would continue to evaporate potentially all the way to the fuel pump??
Then when we go to start the engine, fuel has to fill the fuel line and the float bowl(s) before the engine can start? I’m not sure how cars with the return line would act differently? Are there other considerations I’m missing?