2002 Yamaha TT-R 125 Logo

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Anonymous Posted on Jul 21, 2012

2002 ttr 125 fuel leaking out overflow tube

I already checked my float and thats not it. but it keeps running through my over flow tube.

5 Related Answers

Anonymous

  • 6966 Answers
  • Posted on Nov 17, 2008

SOURCE: CARB PROBLEMS TTR 125 06 Reg

Hi,

Offhand, fuel overflow could be brought about by:

  • misadjusted/punctured float; and/or
  • dirt/sand lodged in the fuel inlet valve. Often this fuel inlet valve is a pin with one end pointed (sometimes rubber) and is controlled by the float.
A seized starter plunger would have to be replaced. This problem could have been brought about by:
  • short/jumping contacts of the starter switch;
  • sticking/corroded terminals/contactors of the starting relay.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

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Anonymous

  • 126 Answers
  • Posted on Mar 16, 2009

SOURCE: float hieght for 1984 IT 490

not sure of the exact height, but if you hold the carb level with fuel hose attached and pushing float up with finger, turn on petcok and slowly lower the float until it is just above horizontal. at this point, gas should start to flow out of the needle & seat.

if float turns off gas too soon, then engine will starve.

if float doesn't turn off gas, then it will flow out of the carb overflow tube.

tombones

  • 3567 Answers
  • Posted on Jun 28, 2009

SOURCE: My TTR 125 wouldn't start after being idle for

The adjuster tang on the float (in green) rises and falls to maintain fuel level. It pushes on the float needle to stop the flow and drops to let fuel in. Did you loose the needle? If all parts are there, gently bend the tang upward to lower the gas level in the carb.

A “very helpful” rating for this answer? Thanks!

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Anonymous

  • 3 Answers
  • Posted on Aug 27, 2009

SOURCE: 2000 yamaha ttr90 fuel leaking out overflow tube

your float is stuck take carburator off and clean wiggle float and it shouldnt leak gas anymore

jimmy

  • 409 Answers
  • Posted on Mar 12, 2010

SOURCE: gas running out rubber tube left side where the gas line tees

You have a stuck float, and need to pull the carb, and clean it out

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Hav 2009 yamaha 125 vino small gas line on left side keeps flowingas out wile its runing help.thanks

That tube is an overflow tube. It is leaking fuel because the cabs float valve is not shutting off the flow of fuel. The carb must be removed and inspected for debris as well as cleaned.
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My TTR 125 wouldn't start after being idle for several months. I removed the bowl and cleaned it and the jets, making sure that all of the openings were clear. When I put it back together, though, it leaks...

The adjuster tang on the float (in green) rises and falls to maintain fuel level. It pushes on the float needle to stop the flow and drops to let fuel in. Did you loose the needle? If all parts are there, gently bend the tang upward to lower the gas level in the carb.

A “very helpful” rating for this answer? Thanks!

e037244.gif
5helpful
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2000 yamaha ttr90 fuel leaking out overflow tube

your float is stuck take carburator off and clean wiggle float and it shouldnt leak gas anymore
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