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| Joined: | 03-13-2005 |
| Location: | Salt Point, New York USA |
| Posts: | 208 |
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Are you refering to the line that tees off after the pump back to the filler neck ? If so, that line should have a check valve in it to stop flow from the pump back to the tank. It is strictly an anti-syphon line to break a potential syphon when the tank is higher than the carbs. The check valve allows air to be sucked into the line when there is no pressure in the fuel line. The check valve is small and inserted into the original hose. Unfortunately, many were lost when owners replaced the hose and were not aware of the valve in the old hose.
Jim