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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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carb rebuild, float valve

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  #21  
Old 4 Weeks Ago
Bluto Bluto is offline
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Would only add that if you are having float and carb overflow problems carry a fire extinguisher until you are SURE it is fixed. I nearly lost a new-to-me '73 Norton Commando when it overflowed and caught fire while starting...turned out the PO had installed new floats that was slightly too wide (fixed that with a file) plus he'd put split loom on the alternator wires that caught the spilled fuel. I was able to put the fire out with my gloves but it could have ended very badly...
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  #22  
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Encyber Encyber is offline
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I've concluded (conjecture only) that the small black sickle-shaped piece of debris clogging my float valve most likely came from a degraded section of fuel line, as the line is original (14 years) and the bike sat virtually unused for the last 5 years before I bought it. Also, the petcock is new, replaced with the carb rebuild in Feb. I'll be replacing the fuel line tonight after work; no question about that. However, considering the recent comments, I believe the consensus here is that a fuel filter is ill-advised and potentially troublesome, especially as my petcock is over the choke, opposite the carburetor side of the bike and would need to be installed horizontally above the engine. I should leave it out then, yes?
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  #23  
Old 4 Weeks Ago
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At a guess i would think the debris was off either end of the pipe and someone pushed it on a bit "cocked" and the tap or carb spigot cut a little shaving off it. That rather than degraded pipe. If you cut back 1/4 " on the ends you could be ok.
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  #24  
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Yes, forget the filter. Just work clean and replace that hose like you said.

FYI I never run filters on any bike I have ever owned. I have been riding for (well, since mid 60's, that's over 50 years) and have always had more than one bike. I never shut off the petcocks. In all these years I have only ever had one time that one carb on my Honda 550 stuck a float and drained gas on the floor. Too rare to be a consideration unless you have a water heater or something in the garage that can spark and cause a fire.
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