Question about kawasaki KX 125 Motorcycles

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I was out riding my kx 125 and the engine just died. It won't start and the engine just backfires. It has plenty of gas and the oil is good too. Checked spark pllug and it was fowled and wet. Cleane

Won't start with starting fluid either but it seems to have spark.

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Ive got a 2000 kx 125 with good spark, compression, and clean carb but wont start and spark plug is wet every time i take it out. Not sure wat to do.

Posted on Jun 07, 2015

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Kx 125 are notorious for having bad stators,so bearing in mind your engine has compression,clean air filter,and clean carb do the following, check that your spark plug have a good healthy spark,if the spark is irregular and weak that's the sign of faulty stator, open up the stator cover see if there is no moisture another sign that stator might be faulty. The stator problem is pain,because after putting fresh new spark plug the engine can start fine and you may ride for few minutes when the problem suddenly reappears, if thats what you experienced -STATOR.

Posted on Sep 24, 2014

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For kx125, that kind of problem i kind of remember my friend just like that too. so clean everything inside . so u have to changes the valves and also the lifter then do the piston pin too,.also chick the rod if in good! that's it for now then when u do that tell me what going on!

Posted on Dec 30, 2013

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Posted on Jan 02, 2017

donwon666999
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SOURCE: My 2005 Kawasaki KX 125

change the plug then drain the carb and ck compression and that will tell u the story

Posted on Sep 16, 2010

Mr BrokRench
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SOURCE: 1993 kawasaki vulcan...after about 20min of riding

Check your coil and the cdi, sounds like they may be overheating and shutting down. Also check for possible vapor lock.

Posted on Jul 06, 2011

czaa
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SOURCE: My 2005 kx 125 won't start there is no spark at

go bac and chec timing-mite hav confused top dead center with bottom--also is wiring tite and no flaws specialy at batt area,coil .....mite need to take some current test

Posted on Apr 13, 2012

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1 Answer

Bike is starting and backfireing,cant give any gas or it will die. this is be couse of lack of gas fro secondary ?


Hi, Michael and the usual suspects are:
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2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
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Virago Backfiring


im no expert. but gas in ur oil not good.i wouldn't ride it. i think u should change the oil and then remove plugs, bump starter a few times, install new plugs and ride

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I just purchased a 93 kx 125 and it wus runnig fine until i tried to open it up all of a sudden while im riding the bike just locked up nd cut off i have no idea why


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oil presure / level switch if you're sure and I mean realy sure that you have lots of oil and it is circulating ( you sound like you know what you're talking about)put a jumper across the oil presure swith and you will know you have the right ones because the oil light will go out and the bike will run
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I need to know what weight oil to use in my 03 kawasaki kx 125


Use 10w40 motor oil in the gear box. Don't use any synthetic oils, oil marked "EC", or oil with "special" additives. Stick with the major brands; Pennzoil, Quaker State, Mobil or Shell. If in a hot area like Texas or New Mexico go with 20w50.

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Use TWO STROKE ENGINE OIL in the pump. If not using an automatic oil pump, then mix the gas and oil 32 to 1. That equals 4 ounces of TWO STROKE ENGINE OIL to one gallon of gas. NEVER use motor oil in the gas. Only two stroke engine oil.

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

Jun 30, 2009 | 2003 kawasaki KX 125

4 Answers

Wont start by kick start but will by pull start


sounds like your idle jet is clogged, remove your carb and clean idle jet cause it won't idle or kick start without it...good luck to you friend...Tim

Jun 05, 2009 | 2003 kawasaki KX 125

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