So you think the fuel sits still in your tank when you drive down the road? :spit::rofl::roflmao: What about the return line pissing fuel back into the tank? Do you think that causes bubbles? There is air present in the fuel ALL OF THE TIME. Believe me or not, its true.
The return line from the engine is affixed in the fuel cup next to the supply, no air gap so to speak...
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