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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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  #21  
Old 28th May 2012
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If I remove the fuel line from the tank and put the petcock on reserve, should fuel flow out without putting vacuum to the smaller line?
I'm not sure about reserve. Put a clean tube on it and suck on it.
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  #22  
Old 29th May 2012
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I took the petcock off and checked it. The fuel flows good with vacuum applied. I have checked the diaphragm, set the carb settings to the recommended settings per the jet kit, checked the plugs, fuel, no intake leaks. I am done. I will be calling my local dealer tomorrow to set up an appointment. Thanks to everyone who helped me.
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  #23  
Old 29th May 2012
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a Really fast way to check if it's a lean condition, possibly cause by wrong float setting, or accelerator pump not working is to start the bike. Throttle up to where it starts running poorly, and spray carb cleaner into the air cleaner inlet. If it smooths out, then it obviously is a fuel issue. This is of course assuming that there are absolutely no vacuum leaks at the intake or around the carb base and all vacuum lines are good and hooked up properly. If the float isn't allowing enough fuel to be stored in the bowl, then it will try to run, but quickly turn to crap. without actually seeing the problem in person, its difficult to make the best suggestion, but this is what I would try. Likewise, if you suspect too much fuel to be a concern, create a vacuum leak to see if things improve. If so, then jetting could be an issue or float is set incorrectly.
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  #24  
Old 18th June 2012
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Did you get the issue fixed what was the issue?
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  #25  
Old 19th June 2012
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Originally Posted by RustyNuts View Post
Did you get the issue fixed what was the issue?
I was also wondering. If it was solved ?

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  #26  
Old 19th June 2012
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It's not because of an unvented(clogged or incorrect) gas cap, maybe?
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