Sportbike Forum: Sportbike Motorcycle Forums - View Single Post - runnin out of gas in reserve
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post #3 of (permalink) Old 12-16-2005, 01:09 AM
Dad
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Join Date: Oct 2000
Location: Pittsburgh Pa
Posts: 4,230
Most have a vacuum operated petcock. That means no fuel will flow until the engine's cranking. Because the bowls were run dry, it will need to crank on the starter to create a vacuum, which opens the petcock, which will then start to allow the carb bowls to refill. Meaning keep cranking. It will take a good thirty seconds or so. Maybe you've already figured this out by now.

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