Question about 2003 kawasaki KX 250

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86 kawasaki kx250 rich mix problem

I mixed my 2 stroke oil too rich,it was smoking. I have changed the muffler packing,which was oily,and ran it for a while without the silencer on it trying to burn off the excess oil but it still smokes.Can i take the muffler off and clean it or what should i do ? Thanks

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"Learn to like smoke for awhile. Smell the aroma". Pardon the humor. I couldn't resist. Chances are there is oil built up in the crankcase. It is going to take some time for the oil to dissipate. How long? I don't know. It all depends on how much is in there. Cleaning the muffler is no help since the oil burning is coming from the crank not the muffler. If you are careful, and keep a vigilant eye, you could cut the gas/oil mix in half to 64 to 1 instead of the normal 32 to 1. That would mean only 2 ounces of oil per gallon instead of the normal 4 ounces. Let the crank add the rest. This will help burn the crank oil excess, but BE CAREFUL. When the crank drys up you had best not ride until more oil is added to the gas.

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Posted on Jun 16, 2009

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4 oz of oil per gallon 32:1

Posted on Aug 19, 2010

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It's a 2 stroke. It's supposed to smoke. Yes that extra oil causes alot of extra smoke but I would not run a lower gas to oil ratio. Usually 30 to 1 is a good medium. If it's not fouling the plug then just ride the hell out of it and it will cure its self. If smoke bothers you, then maybe you should consider a nice clean and smooth 4 stroke. Good luck.

Posted on Jun 26, 2009

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U mean put 4oz oil in to mix with gas? ? Cuz I got 1987 kx250. So I dun kno how much to mix. Wit gas

Posted on Jul 09, 2011

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I have a 1990 kx 250 2 stroke was just wondering how many cap fulls of 2 stroke mixing oil i would need to put in with a tank full of fuel ? can anybody help me ?

Posted on Feb 06, 2010

  • cchhrriiss18 Feb 06, 2010

    i really want to ride my kx 250 but want to make sure everything is done properly so i dont damage my bike i dont understand 32:1 how many cap fulls would this be of two stroke mixing oil.


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The oil in the muffler must be burned out. Try to ignite it with a torch keeping the outside of the muffler hot as the oil burus out from inside. Not fun.

Posted on Jun 16, 2009

  • jim horton Jun 16, 2009

    The oil in the muffler must be burned out. Try to ignite it with a torch. Then keep the outside of the muffler hot as the oil burus out from inside. Not fun.


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Posted on Jan 02, 2017

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SOURCE: How do i disconnect the oil pump/injection system, Fuel oil ratio

Hi Dan,
Why do you want to disconnect the vital oil supply? If you are experiencing too much blue smoke or plugs oiling you can adjust the amount of oil fed to the engine via the secondary oil pump cable,the one that splits off from the throttle to the carb.
If you disconnect the cable it also stops the oil pump sending oil to inlet, winding out adjuster increases oil screwing in reduces.
As for ratio? trial and error as No knowledge/specification is available for Oil injected engines, poss 25:1 to start but don't blame me if you seize?
Quality synthetic oil is always a must, did you know you can also purchase smokeless two stroke oil?
Good Luck!
Paul 'W'
Please remember the Fixya button if my efforts are respected?

Posted on Jan 24, 2009

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SOURCE: break in for rebuilt lower end kx250 2 stroke

Break in is just riding the bike easy for an hour, shifting through the gears w/o high revs. Now go out to the woods and have fun. Change gearbox oil after about 20 hours of riding to remove metal contaminates from the full break in.

Top rating due on this answer! Thanks arenacross91!

Posted on Apr 22, 2009

SOURCE: I purchased a 1995 GPZ 1100 Kawasaki motorbike. It

Hope you drained the oil and also changed the oil filter.
This problem of cutting off is a carburator/fuel related issue.
I guess the fuel might not be pouring in to the float chambers faster enough.
Try this, remove the air -filter and thn start the engine and as it is about to cut off, block the intake(by your palm) at the carburators and see what happens...taking care not to over block it as the gas may pour out and also flood in the combustion chamber rendering it to shut off due to to much fuel.
If it does respond and stay running thn the problems is tht the carbs are not getting the gas as required and probabley you may have to recheck the float level, the float pin,carb synchro, air-fuel mixture.
Check the pet- c o c k too.
Hope this helps!

Posted on Nov 27, 2009

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You might be running the bike a little rich.
A mix of 32/36 to one is good for outriding.

You should de-carbon the exhaust and replace the silencer packing. This will also give you some unexpected horse power.

Enjoy the ride !


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