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Mikuni carburetor overflow

My Mikuni carbureted 113 v-twin will not quit overflowing out of the overflow hose. Took the bowl off, cleaned out and took the bowls out and plunger, no debris?? @

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  • Motorcycles Master
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Hi, Wes and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
mikuni carb overflowing out of ideas
http://www.accessnorton.com/viewtopic.php?f=1&t=11291
Mikuni Carb gas overflow problem
Carburetor Carb Leaking Gas How to Fix Repair it Motorcycle Honda DIY...
Beta Rev3 Carb Problems can all be sorted by going through the info below

Posted on Oct 12, 2017

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Posted on Jan 02, 2017

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  • 86 Answers

SOURCE: I have a 2000 R6 that has been sitting for about 2

sounds like the carbs are all gummed up from sitting so long. they will need to taken apart and cleaned..

Posted on Jun 03, 2009

SOURCE: at first gas would just start pouring out of the

Check the level of the fuel in the float chamber, it could be low.
You can also check the solenoid valve ....turn the ignition 'on' and you should hear a click sound at the s/valve, this proves the valve to be openning ones the ignition is turned 'on'.
Hope this helps!

Posted on Jun 26, 2009

  • 3567 Answers

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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Posted on Jun 28, 2009

baugh55grfmj
  • 225 Answers

SOURCE: carburators leaking

Tap the bowls with a screw driver handle while the gas is turned on. Your floats are sticking. If that doesnt work then you have to take the bowl off and make sure your floats are not bent.

Posted on Jan 10, 2010

dmsr63
  • 2050 Answers

SOURCE: brand new 24MM MIKUNI CARBURETOR that floods out the bowl...

Carb's can be cleaned, hope you didn't throw money away on a new one for dirt.
You may have dirt in the gas tank getting to the carb. If you can, remove the bowl drain, (At the bottom) and see if there is sediment in it.(dirt)

Posted on Feb 11, 2010

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Cheapy 4 wheeler is leaking gas bottom tube of carb.. took apart and cleaned float is working put back together still leaks???


the float is not what needs cleaning.. its the needle and seat that the float controls that needs cleaning.. this is what regulates the flow of gas into the carburetor float bowl.. -- #32 on this exploded view..
http://www.carbparts.com/mikuni/vm18_144.gif


vm18_144-bzhe2oey0b0e11an1gziaszn-4-0.gif

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I have a 1983 kaw kd80 with a mikuni carb and cant find anything about it the only numbers on it are.r3.91.and k80 are these good numbers? when researching this I cant find anything.


Hey Dean, What else do you need to know about this bike? Here is what you need... get it while you can!!!!
1980 1987 Kawasaki KD80 Repair Manual Clymer M350 9 Service Shop Garage

Hey Dean, If the floats are plastic, they are preset,if the floats are separate, riding on metal "pins" and each float arm must be separately.. you will have to get a manual or http://www.mikuni.com/ and find the info you need.. if they are too low you will lean out.. if they are too high you will get gas overflow...(If you can't wait.. set them so they "FLOAT" high in the bowl..).. it should run ok, just leak gas out the overflow hose..

Jun 24, 2017 | Mikuni Motorcycles

1 Answer

Why is bike flooding and pushing gas out top over flow hose on carb after it runs for a min or two. Carb float been replaced still doing it.


Hi, Paige and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
For more information about your issue please visit the websites below. Good luck and have nice a day.
My carb leaks fuel out of the overflow hose at the bottom of my carb
Carburetor is leaking gas out of overflow tube need help
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Have an ss carb e type an a single outlet pingel pepcock have a vent line from carb what do I do with the vent line


Here's S&S's manual for the Shorty Carbs (both E & G):

http://www.sscycle.com/files/7913/7033/9802/51-1012_carb_e__g_series_shorty_carburetors_installation.pdf

On page "10", it states, "Slip fuel overflow hose onto fitting on carb bowl and neatly route behind pushrod tubes. On a big twin model, hose should go toward back
of engine. On a Harley-Davidson Sportster model, hose should go toward front of engine. Exit end of overflow hose must extend down
below engine and away from exhaust pipes."

This is the only "vent" hose (actually, a fuel overflow hose) that I know of.

Aug 24, 2014 | Motorcycles

1 Answer

Ok I cleaned the carborator to my 99 Honda beartracker 250 and I took of the small narrow hose on the bottom off of the bowl off and when I was putting it together noticed the other end was detached too....


that hose is the overflow
the normal place for them to go is between yout engine and your frame and they dangle under the bike
just in case of any overflow problems

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1 Answer

Overflow pipe leaking on carburetor 125 xtz yamaha


Hi, Anonymous and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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http://gigi600.altervista.org/immagini/xt125r/XT%20125%202005_service.pdf
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I took my carb off of my 2007 Keeway hurricane and now i dont know where the line from the bottom of the carburetor goes


if its the line at the very bottom of the carb its the overflow for the bowl and it doesnt go anywhere

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1 Answer

Leaks gas from the carburator.


Hi, Morgan_honda and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Jun 19, 2010 | 2003 Yamaha YZ 125

1 Answer

How do the hoses go on my carb 1975 suzuki rm 125


How many hoses do you have? On most bikes you have a larger hose, for fuel, and two smaller hoses for carb overflow. You can take off the bowl from the carb and turn on the gas (outside the garage).........and if gas flows out you have the fuel hose on correctly. The smaller overflow hoses are not that important. They are just there to take any fuel overflow away from the carburetor.

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3 Answers

Carbuator leaks gas on motorcycle


Two possibilities; the float bowl gasket is leaking, or the carburetor is overflowing (gasoline is coming out of the overflow tube).
If coming from the float bowl gasket, simply remove the float bowl and replace the gasket.
If it is overflowing remove the float bowl, pull out the float hinge pin, remove float and float valve. Clean the valve and inspect the valve for excess wear (a noticeable groove worn into the tapered seat) and replace if needed. While you have the float out, shake it and listen for any gasoline that may have leaked inside it. If there's liquid inside the float, toss it and buy a new one (or else your carb will overflow with gasoline constantly). Before you put the float bowl back on be sure to clean it out with soapy water and an old tooth brush.
That should take care of any leaks or overflowing.

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