'88 kx250 need help please!!! - Kawasaki Forum :: KawasakiWorld.com
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post #1 of 5 Old 03-05-2016, 03:35 PM Thread Starter
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'88 kx250 need help please!!!

Hello all,

New to the forum and just picked this bike up for my son. Was running when we bought it and bike appeared pretty clean from what I saw. 2 Days later can't get it running. Put a new plug (NGKBR8) in it, new OEM air filter, fresh gas and oil with a 32:1 ratio per the Clymer's manual. Bike has spark and an OK amount of compression. Carb seems to flood out every time? took it apart and cleaned it,, didn't look bad but appeared the float needle was very lightly sticking. In the one pic, I uploaded a pic of the sparkplug I changed that supposedly the seller had replaced 3 weeks prior. It was a NGKBR9. The parts guy at Kawasaki said to use the BR8's as they are less likely to foul.

Now I am new to the world of 2-strokes but somewhat mechanically inclined and feel confident enough to do the basics. When she floods, gas/oil will lightly leak from where the exhaust manifold attaches with the 3 springs to the cylinder head. I am at a loss....been on various links online and can't seem to come up with a solution. Maybe someone on this forum will have the knowledge that I don't. Anyone have ideas??
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post #2 of 5 Old 03-05-2016, 07:53 PM
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First off that is a real sweet KX you got there. Older 250 2-Strokes are amazing bikes I've had a few. If all you described looks ok and obviously started with a new plug I'd go an rebuild that carb first thing. You already took it off and cleaned it, said a needle stuck a bit, it's real quick an cheap to do on those.

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post #3 of 5 Old 03-07-2016, 03:56 AM Thread Starter
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Thank you 2wheelobsessed for the reply. A friend of mine said possibly the CDI box which is aka the stator could be the cause. I don't want to take it down to Kawasaki and have them hit me for $110 per hr when I bought the bike for $1K so hence the reason I'm trying to find help from guys like yourself. I'm not a 2-stroke mechanic by any means, but if I knew what had to be replaced and it didn't require taking the engine apart, I probably could do it. I may by a compression test kit as well.
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post #4 of 5 Old 03-07-2016, 08:18 AM
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You can verify the CDI just like any motor. Put a plug in the wire, wedge it somehow to the engine or a frame ground, and kick the bike and watch for spark. If it sparks, and it's a good, strong spark, your CDI box is fine. Without the motor running, the only way to check the stator is to ohm it out.

2 stroke and 4 stroke ain't that much different in those areas. If you can run around a 4 stroke, 2 stroke is easy nuff. Internally is where you run into the most differences.

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post #5 of 5 Old 03-09-2016, 07:01 PM Thread Starter
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Thank you! Think I will test that CDI and see what I come up with.
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