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Fuel over flowing

When I start it up it allows fuel to go down the overflow pipe

Posted by Ian Hirst on

  • Ian Hirst Jun 06, 2012

    it is only doing it when the engine is running and stops when you stop the it

  • knot
    knot Jun 06, 2012

    Make sure there is not rust in the tank or it will continually leak due to the rust getting into the carbs. Open the tank cap and see if it stops coming out of the overflow and if it does then there is a vent problem. If it still overflows more than likely the fuel system(carbs included) needs cleaning.

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2 Related Answers

jpolicky

Jeff Policky

  • 40 Answers

SOURCE: Suzuki Bandit 600 GSF 2003 Fuel Overflow

Suzuki say not to fill the fuel tank to the top. fill it 3/4 full to allow for heat expansion.

Posted on May 31, 2009

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ruthlesswhit

ruthless75

  • 47 Answers

SOURCE: Fuel running out of carb overflow pipes

Either the float is set to high, you have trash in the lines, or the more likely scenario is the atmospheric vent line is pinched or plugged.

Posted on May 15, 2012

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4 Answers

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Hi tim laura...
You have some trash/debris in your carburetor inlet valve.
It is not allowing the needle to make a complete seal and this is allowing the carburetor to over fill and flow out of the over flow pipe.
Clean your carburetor and check your tank for debris/trash also to stop this from happening again.
You may even put a filter in the line from the fuel tank on the bike to the carburetor.
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Please take time to rate me

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Hi Jwelden,
Have you checked the float level in the float chamber?
I guess you may have to reset the float pin adjustment, its allowing more gas to pass through thn required and thus the overflow!
Not bad too, when you are working on the float assembly take the opportunity to blow out the fuel line from petcock to the carburator via the seat for the float pin,any foreign particals there would stop the float pin to seal up and thus overflow.
Fit in an inline fuel filter , this will help keep out the dirt or whatever.
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Knight (Yamaha Seca XJ750A 1981)


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