Posted by ldj on August 10, 2009 at 19:24:04 from (68.95.49.12):
In Reply to: Re: Vapor lock posted by HWess on August 10, 2009 at 17:15:59:
I have thought about what you said and I don't think you can get vapor lock with gravity flow. If you do get vapor the head pressure will push fuel down pushing the vapor with it. the vapor will end up in the carb. and vent out there. I don't believe that all the fuel coming down could turn to vapor starving your carb of liquid fuel. Now with a fuel pump that is different. The fuel pump can't pump vapor. That is when fuel flow stops. the vapor gets to the pump and that is the end of pumping. What kind of car are you talking about where the fuel is higher than the carb. Unless it is something homemade or cobbled up, it doesn't need or have a fuel pump.
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