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Quote:
Originally Posted by History
I assume the gas tank cap is designed to vent from internal pressure and as the gas heats up it expands,,,,,,,,,. I also assume it's designed to let air in to equalize pressure as the gas gets cold and condenses? How could I check my cap before I put gasoline in as my tank is bone dry at the moment? Should I be able to hear air escaping if I pressurized the tank slightly?
I'd like to not have to wonder later.
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The cap also has to be vented so air can enter to replace the gas used as you drive, or the carb would soon run dry!