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Old 08-12-2009, 09:07 PM   #57
mud master
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Joined: Aug 2009
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Fuel Pump Issues

Hi Everyone, My Friend On A 650 Vstrom Had Similar Fuel Issues As You Are Explaining, The Bike Would Run 20 Min. And Then It Wouldn't Have Enough Power To Maintain Highway Speeds. I Traced This Problem To Alcohol Enriched Fuel. (natures Friendly Fuel, Not) When We Run Any Other Fuel Without Alcohol The Bike Has No Problems, I Feel The Alcohol Evaporates Too Fast Within The Pump And Then Causes An Air Lock, When You Turn The Engine Off, It Clears And Then It Takes About 20 Minutes For It To Build Up Again. Try Running Non Alcohol Fuels In Your Bikes And See If The Problem Goes Away. Good Luck.
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