[bdentremont]

I'm fairly new to A's and have never seen vapor lock first hand. However, my experience studying liquid-vapor flows in laboratory settings leads me to believe that slope of that near-horizontal section beside the carb. would be fairly critical if bubbles are going to escape the carb. to the sediment bowl while the fuel is the opposite direction.

I just put a level on the fuel line of our A, and the section beside the carb is actually sloped up a little, as I would think it should to allow bubbles to escape. Has anybody checked the relative slopes of these lines on cars accused of vapor lock and those that are running well?