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6

It's a gasoline vent tube, serving three purposes. Gasoline vapors can be especially dangerous under pressure (pretty much why it is useful), and as the temperature fluctuates it is safer to relieve the vapor pressure than it is to potentially have it build up. The gasoline vapors should preferably not be ejected onto a potential spark source (battery) or ...


3

Interesting issue IF, the internal tubes have corroded within the tank that would be relatively serious. The interesting piece is, how would they corrode. As far as I know, almost ALL the fuel tanks on modern bikes use copper for this overflow. It runs from the lip above the filler point, down through the tank to a nipple on the underside of the tank (or ...


1

I believe you are correct in saying the tubes are inside the tank. What the manufacturers did was ran molded tubing through the tank and it sounds like those tubes in your case have rusted and corroded. What I would suggest in your situation is just plugging the inlet for the overflow by the filler, and the overflow outlet which comes off the tank. You may ...



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