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762 Posts
3-4 weeks? No. Not at the 7-10% concentrations you get at pumps now.
3-4 years, after mixed with water to form a corrosive sludge? Sure.
As long as you use your bike at least semi regularly ethanol doesn't pose any major problems. Yes it sucks and shouldn't be in gas but people also like to instantly point the finger at it every time their bike isn't running perfect.
Pour half a bottle of seafoam in a full tank and see if that helps. If not you've probably got some crap in one or more of your pilot jets which causes a rough/slow/unsteady idle.
3-4 years, after mixed with water to form a corrosive sludge? Sure.
As long as you use your bike at least semi regularly ethanol doesn't pose any major problems. Yes it sucks and shouldn't be in gas but people also like to instantly point the finger at it every time their bike isn't running perfect.
Pour half a bottle of seafoam in a full tank and see if that helps. If not you've probably got some crap in one or more of your pilot jets which causes a rough/slow/unsteady idle.