My 2007 GTS 250ie lately, (conditions are very hot here right now) has been making a noise after I let off on throttle of "putt putt putt" or like mini farting sounds. Is this bad gas, heat, fuel system, or something else? Someone said remove fuel cap and let air pressure out of evap system, but I did that and the scooter is still farting. I am having scoot serviced next week and could tell them to take a look. ..
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