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I have a 1991 Sportster with an S&S Sidewinder 1340 kit that I just purchased from a friend. I started it up for the first time last night briefly, although I didn't drive it. I then went and bought gas and was filling the tank when I noticed fuel leaking from two spots onto the ground. One is what looks like an overflow valve on the carb, although no hose is attached. The other is a small hose at the bottom of the bike towards the middle of the frame. I'm pretty good with cars, but this is my first bike so I wanted to see if anyone had some advice before I start ripping into it. Thanks!

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Probably a stuck float on the carb. The other could be a tank vent if you filled it up too full.

Posted on May 14, 2014

  • Jay F May 15, 2014

    If the float is stuck is there a way to free it up and check without pulling the carb apart?


6 Suggested Answers

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: carb issues

Sorry to hear about your carb issues. Two possible issues that come to mind are (1) fuel level in the bowl most float assemblies are made of brass and have a small tab which applies pressure on the float needle. If this tab is not adjusted correctly the fuel will not shut off when the float reaches its maximum height. The tab can be bent to apply pressure at just the right moment. You can verify this by doing a bench test, with the bowl off. So much nicer to know before going through all the work of putting it back on the bike. (2) Check the buoyancy of the float itself many of the old-school foam ones dont have enough umph to close the needle all the way. If you have the brass style floats make sure you dont have a leak. ( submerge the float then check for air bubbles also shake the float and listen for gasoline within) Check with GDL Cycles they can help you with those hard to find parts for many old school Japanese bikes.

Posted on Nov 10, 2008

  • 99 Answers

SOURCE: My bike pumps gas out the overflow

see for that the float needle is fitted well, search for that any unwanted dirt or dust particle are not stuck in the flow line of fuel in the carbeaurator check for all port's & fuel line are clear inside the carbeaurator see what might help you out see you soon.....

Posted on Mar 23, 2009

  • 1 Answer

SOURCE: Rear Carb leaks fuel out of overflow

Hole in the float. It fills with gas, sinks and fails to stop the fuel flow

Posted on Apr 25, 2009

SOURCE: Fuel leak

The carb/s are flooding , you will have to check the float pin and the float, a good clean with compressed air should do the job, check too the fuel line and the fuel filter.
Hope this helps!

Posted on May 24, 2009

  • 2 Answers

SOURCE: 89 kawasaki ninja 250 crank no start

ok i have one and i just fixed mine you need to drain the fuel from bottom of carbs and drain the tank also. then replace the spark plugs once you do that add new fuel in tank and drain the carbs again unitil good fule start runing out then shut them off. aftre that make sure there are two line connected to the petcock from the carb. spray soem starting fluid in the air box and chock it boom it will start. if it has spark.


Posted on Jul 15, 2009

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