engine throttle running wide open

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  #1  
Old 05-09-13, 05:34 PM
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engine throttle running wide open

my 18 hp briggs vanguard v twin is running wide open. Could a spring or something have come loose from the carb.?
 
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Old 05-09-13, 08:08 PM
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If you have been using fuel with ethanol in it, check to make sure the butterflies on the carburetor or not stuck wide open from the gas turning to GUM. When you shut down the engine the carburetor always goes wide open. If fuel with ethanol in it has gotten in the holes for the the throttle shaft and has been sitting a while that shaft will be stuck and you have no control over thottle at all! I just did a Kohler Command with that problem,,took carb off, took screws out of butterfly, removed shaft and cleaned it and the holes it rides in,,Problem solved. Good luck
 
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