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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Mikuni problem
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<blockquote data-quote="ClassicBiker" data-source="post: 54288" data-attributes="member: 1632"><p>I've had Mikunis on my Shadow for years and not had this particular problem. I tend to also to put Stabil (a brand of fuel stabilizer) in my tank regularly. I doubt the brass or aluminum is swelling, because that would suggest that the metal is absorbent. However what I wouldn't be surprised to learn is the ethanol is attracting water out of the air and this is causing corrosion to form on either the carb body or the float. This build of corrosion could cause the binding you are referring too. I also wouldn't be surprised to find that the ethanol is attacking other components in the fuel system and causing them to break down and this is being deposited in your trouble spot or on the float spindle and causing the binding and your dismantling to file the pillars to create clearance is freeing up the spindle again.</p><p>My suggestion would be to use fuel stabilizer and fuel system cleaner as a prophylactic to the carbs gumming up.</p><p>Steven</p></blockquote><p></p>
[QUOTE="ClassicBiker, post: 54288, member: 1632"] I've had Mikunis on my Shadow for years and not had this particular problem. I tend to also to put Stabil (a brand of fuel stabilizer) in my tank regularly. I doubt the brass or aluminum is swelling, because that would suggest that the metal is absorbent. However what I wouldn't be surprised to learn is the ethanol is attracting water out of the air and this is causing corrosion to form on either the carb body or the float. This build of corrosion could cause the binding you are referring too. I also wouldn't be surprised to find that the ethanol is attacking other components in the fuel system and causing them to break down and this is being deposited in your trouble spot or on the float spindle and causing the binding and your dismantling to file the pillars to create clearance is freeing up the spindle again. My suggestion would be to use fuel stabilizer and fuel system cleaner as a prophylactic to the carbs gumming up. Steven [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Mikuni problem
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