Question about 2003 kawasaki KX 250

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Motorbike wont start after running engine kawasaki kx 250 if i ride my bike for 2 minutes or 50 minutes when ishut down the engine it will not start again until i clean the spark plug

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Possible bad rings allowing excessive oil seep up and wash spark out on next fire. do a compression check, ck for proper spark, and fuel....hope this helps

Posted on Sep 13, 2009

Testimonial: "cheers i will compresion test and let you know"

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Top end is done needs rings or you might be running to cold of a plug or mixing gas to rich try a br7e5 plug and see if that helps

Posted on Sep 21, 2009

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1 Answer

Er-6f 2006, buzzing noise near fueltank after ride. power off


Could be your fuel pump or your fan is still running.

If it's the fuel pump. You should hear the same sound when you turn the contact on in the morning.
If you can only hear it when the bike is warm and you shut the engine down, it's likely it's the fan spinning. Some Kawa's do it, some don't. My old GPX600R did it. Sometimes it ran (after I shut the bike down) for upto 15 minutes (in hot weather),but my ZZR1400 doesn't do it at all.
My old GPX used to buzz/whistle form the gas cap too, but that shouldn't have anything to do with turning the power on/off.

Apr 04, 2014 | kawasaki ER-6f Motorcycles

4 Answers

HOW DO I SHIFT A 2003 KX 250


pull your clutch in on the left handlebar push the shifter lever down and let you clutch out slowly while giveing the bike a lil bit of gas. But if you don't know how to ride i wouldn't be jumping on a kx 250

Sep 20, 2009 | 2003 kawasaki KX 250

1 Answer

Replaced geerbox oil in kx 250(04)now bike wont finde 3rd,4th,5th. it wos fine before.please help me!


Thats a strange one.For some reason it may be just locked in 2 gears at one time.Lift the bike of the ground onto some sort of stand.Don,t start it.Take the plug out.Run the rear wheel backwards and forward.Clicking the gears at the same time.This might 'unlock' a wound up box.Being off the ground you can't hurt it.Just try different gears and in both directions.I hope this helps,because its a strange problem if all was ok beforehand.Thanks

Aug 30, 2009 | 2004 kawasaki KX 250

1 Answer

2002 kx 250 2 stroke wont start


sounds like too much oil in the mix add more gas & clean spark plug
Cheers Rob

Jul 21, 2009 | kawasaki Quad Bikes

1 Answer

My KX 250 keeps dying on me


try nexted hottest plug for ex. i had a b8eg standard and went to b7eg

Jul 11, 2009 | 2003 kawasaki KX 250

5 Answers

I have a 2005 kx 250 2 stroke and it keeps eating plugs


NGK brand spark plug BR8ECMVX is the stock plug for the bike. The proper gas / oil mix is 32 to 1. That means 4 ounces of 2 stroke oil per gallon of gas. The posting was not clear as to just what the problem is. If you are burning up plugs there may be a air leak in the intake system making the bike run lean. A lean fuel mix runs hot.

Jun 24, 2009 | 2005 kawasaki KX 250

1 Answer

I have a kawasaki kx 250 2 stroke an it was running good now it wont start. it has spark it wants to fire up but it just backfires.


hi murray,

nice bike you have there.

have you checked on the carb ans see if the jet is right and the mixture is normal, this is usually the case if the carb is not tuned right.

better of reset the card, open it clean it, then set to default even if you are using your mixture of gas and 2t. just set to factory default. once it starts give it a few run, 1-2 hours, then set it to how you want your mixture to be.

hope this helps,

regards,

voodoo

May 17, 2009 | 2003 kawasaki KX 250

2 Answers

Foul plug


It seems your piston ring needs to be replaced since its worn out. i am saying so because of the way the bike is being used. Since its 2 stroke, engine oil from the sump is making its way int the firing chamber and depositing on your sparkplug. Therefore pay special attention to the last ring, thats the one which uses the oil for lubrication...........sodeep

May 04, 2009 | 2003 kawasaki KX 250

6 Answers

Kawasaki kx 250 fouls spark plug in 30 minutes


You definitely need to change the oil mixture to at least 40:1, use a good grade of 2 stroke oil. You do NOT need to return the bike. I'd highly recommend using an NGK B7EV spark plug. A hotter plug will stop the premature fouling. I would not recommend you decrease the oil to 50:1 because you are essentially robbing the engine from adequate oiling for the piston, KIPPS valves and the bearings. The hotter plug will make a huge difference but remember if he gets to the point where he is able to ride the bike to it's potential he will need to run the cooler plug, B8EV or B9EV. You can also use a cheaper plug in the same heat range, B7ES or B8ES. Those plugs should cost about $1.25 ea. and are an affordable cost of running the bike. It's not uncommon to replace a spark plug frequently, it's the nature of the 2 stroke engine.

Dec 08, 2008 | 2003 kawasaki KX 250

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