Quote:
Originally Posted by bdentremont
... 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?
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Please, believe me, the large vapor bubble seen in my pictures above is swept all the way DOWN HILL from the sediment bowl to the carb. Part of that pathway is vertical; part is slightly sloped. It makes no difference against the liquid flow when the motor is running; you might think bubbles always go up, but not so.
Here's a picture of my fuel line showing its slope--taken just after I grasped at the insulation straw.
Steve