Question about kawasaki KX 125 Motorcycles

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2001 Kawasaki KX 125 leaks fuel from the carb overflow

Why does my 2001 kx 125 leaks a lot of gas from the overflow, and when I start it revs really high like I'm giving it half throttle? @

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  • kawasaki Master
  • 58,414 Answers

Hi, Montyrobinso 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.
9. Contaminated fuel tank.
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.
kx125 carb leaking out of overflow
Major problem fuel running out of carb kx 125
https://www.howtomotorcyclerepair.com/images/Kawasaki-KX125-KX250-Service-Manual-Repair-1999-2000-2001-2002-99924-1244-04.pdf
OEM Parts for Kawasaki
2001 Kawasaki KX125 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Feb 28, 2018

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5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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SOURCE: Yamaha DT 125 1986 - High Revs when idling

i would say the answer from polar cycle is good...but if it is not the case....you may take a look at crankshaft seal..sometimes the primary compression is not good if cranks seal leaks and it make the bike running lean in gaz and having you're idle getting up sometimes.........check the transmission oil if its low in quantity even after replacing it recently (this means that you're transmission oil is getting burn by you're motor) and also remove the magneto cover to see if there is gaz accumulation in that area...if so that means the seal leaks on the magneto side.....

Posted on Aug 15, 2009

Testimonial: "After finally rebuilding the carbs and replacing the reeds and air filter, the problem was actually solved by replacing the crank seal. "

  • 3567 Answers

SOURCE: carb problem

You have an air leak that is making the fuel mix too lean. Probably intake manifold gaskets. Other sources are reed valves chipped, deformed or broken, cylinder head gasket not fully sealing and crank seals gone bad. Your bike is 20 years old, I don't remember if your bike has reed valves.

The dealer is not going to have new parts. google " suzuki motorcycle parts " and " antique suzuki motorcycle parts "
also google " motorcycle salvage suzuki ". This should give you some sources for parts.

Please rate this solution. Thanks weldin_fool!

Posted on Apr 19, 2009

  • 1 Answer

SOURCE: wont start by kick start but will by pull start

it could be the gaskets around your carb are bad and leaking air if so its thinning your gas fumes with more air then what is needed inside your combustion chamber witch is causing your engine to stop running like that. best of luck

Posted on Apr 20, 2010

bazzz7071
  • 342 Answers

SOURCE: 2001 kx 85 has sever low end hesitation. I can't

Hello you have a
1. fuel starvation problem clogged carburetor jets.(clean the carb)
2. Intake leak carb joint/intake manifold.( start your motor get it to idle best you can spray wd40 around the carb joint if the rpms change you have a leak replace the carb joint or gasket/o-ring as needed.
3. crankshaft main seal magneto side leaking or worn main bearing.
check end play on the magneto side remove the cover plate firmly grab the end of the shaft with up an down motion if you can feel it move replace the main bearings and seals.
These are problem that will cause your motor to run lean and hesitate.
Hope this helps you with your problem

Posted on May 10, 2010

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1 Answer

1995 Kawasaki KX 125 leaks fuel from the carburetor


Hi, Jeff you need a carburetor rebuild kit that has both needle and seat 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.
https://www.kawasakimotorcycle.org/forum/kawasaki-motocross-offroad/46372-major-problem-fuel-running-out-carb-kx-125-a.html
kx125 carb leaking out of overflow
Kawasaki KX125 Service Manual
OEM Parts for Kawasaki
1995 Kawasaki KX125 Owner Manual

Aug 14, 2018 | kawasaki KX 125 Motorcycles

1 Answer

2003 Kawasaki KX 125 not getting gas to the carburetor


Hi, Anonymous you need to locate the fuel flow origin first to isolate the problem area otherwise the usual suspects are:
1. Fuel tank empty.
2. Fuel cap or fuel tank not venting properly.
3. Fuel filter clogged with rust or dirt.
4. Fuel valve not in the on or reserve position.
5. Vacuum line to fuel valve cracked, broken, pinched, or missing.
6. Fuel valve/petcock clogged or diaphragm cracked, cut or torn.
7. Fuel line from the fuel valve to the carburetor or fuel pump clogged, cracked, pinched, bent, broken, or missing.
8. Fuel pump not working.
9. Fuel line touching cylinder or head causing fuel to boil and vapor lock, repair by rerouting and wrapping line with convoluted tubing.
10. Carburetor inlet clogged.
11. Carburetor float or needle and seat stuck.
12. Carburetor not venting properly overflow line or bowl fitting clogged, pinched, or bent.
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.
KX125 Not Getting Fuel In Cylinder
KX 125 won start after top end rebuild
https://www.howtomotorcyclerepair.com/images/Kawasaki-KX125-KX250-Service-Manual-Repair-1999-2000-2001-2002-99924-1244-04.pdf
OEM Parts for Kawasaki
2003 Kawasaki KX125 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Feb 07, 2014 | 2003 kawasaki KX 125

1 Answer

2001 Kawasaki KMX 125 carburetor fuel overflow


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.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
9. Contaminated fuel tank.
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.
Major problem fuel running out of carb kx 125
Oakys Garage How to clean overflowing Carb Carburetor Part 2 Kawasaki KMX 125 1986 2002 Service Repair Workshop Manual 1987 1988 1989... $22
OEM Parts for Kawasaki
http://mybikemanuals.com/kawasaki

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Feb 05, 2013 | 2001 kawasaki KMX 125

1 Answer

2003 Kawasaki KX 125 is leaking gas out from the overflow


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.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
9. Contaminated fuel tank.
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.
My carb leaks fuel out of the overflow hose at the bottom of my carb
Major problem fuel running out of carb kx 125
03 08 Kawasaki KX 125 250 Service Manual pdf
OEM Parts for Kawasaki
2003 Kawasaki KX125 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Mar 30, 2012 | 2003 kawasaki KX 125

1 Answer

I have a kx 125 it idles fine but when i am driving it it wont rev out


Sounds like there could be a problem with the main jet not delivering sufficient fuel for normal running. Clean out the carb and check the jets and passages for obstructions and dirt.

Mar 19, 2011 | 2003 kawasaki KX 125

1 Answer

2001 kx 85 has sever low end hesitation. I can't tune it to save my live. won,t idle properly. when at idle if you crack the throttle it will bog and then rev up


Hello you have a
1. fuel starvation problem clogged carburetor jets.(clean the carb)
2. Intake leak carb joint/intake manifold.( start your motor get it to idle best you can spray wd40 around the carb joint if the rpms change you have a leak replace the carb joint or gasket/o-ring as needed.
3. crankshaft main seal magneto side leaking or worn main bearing.
check end play on the magneto side remove the cover plate firmly grab the end of the shaft with up an down motion if you can feel it move replace the main bearings and seals.
These are problem that will cause your motor to run lean and hesitate.
Hope this helps you with your problem

May 10, 2010 | 2003 kawasaki KX 125

1 Answer

Will a 2003 Kawasaki KX 125 motor fit 2001 frame?


Hi, Donlee73116 the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
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.
2003 Kx 125 Project Fun25
97 kx 125 frame what engines fit
Kawasaki KX125 Service Manual
OEM Parts for Kawasaki
Kawasaki kx125 1997 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jan 24, 2010 | 2003 kawasaki KX 125

1 Answer

Why do i have fuel pouring out of the tube coming from the bowl on the carb on my 2001 kx 125


The float needle is stuck open and not shutting off the gas. Lightly tap on the bowl with a screwdriver handle and it may stop. If it doesn't then remove bowl and clean the float needle and seat.

Oct 26, 2009 | 2003 kawasaki KX 125

1 Answer

I cant get my 2003 kx 125 to run properly


Remove the slide from the throat of the carb, move the clip on the jet needle one notch lower. This will richen the low end fuel/air mix. - - - Simple, quick, and free.

Do it, then rate this answer as "Very Helpful". Thanks.

Jun 19, 2009 | 2003 kawasaki KX 125

2 Answers

1998/99 kx 125 fuel leaking from carb outlet at bottom


sounds like the needle and seat may be the problem

Apr 15, 2009 | 2003 kawasaki KX 125

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