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Everything Dirt Bike
Make / Model Specific
Kawasaki
89 kx 125 coolant oil mix disaster
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<blockquote data-quote="ossagp" data-source="post: 202970" data-attributes="member: 1650"><p>Lots of things to check for there. I would like to see the top of the piston, but it looks to me like you were getting coolant into the cylinder. you have pieces broken off from coolant collecting in the cylinder and doing two things: one, the hot piston crown gets brittle from the coolant hitting it at the hottest point (right at the exhaust port side), then you get a hydraulic locking action as the liquid can't escape compression fast enough. on top of that you have your own form of 'water injection' working there. google that for airplanes if you are curious and unfamiliar.</p><p></p><p>that rig was sent from the factory with what kawasaki termed and electrofusion cylinder. as such it can't be bored, but may have already been sleeved so that it possibly can (i say possibly because it may already be at max.) </p><p></p><p>so lots of things to check, and i agree that your water pump seal is out.</p></blockquote><p></p>
[QUOTE="ossagp, post: 202970, member: 1650"] Lots of things to check for there. I would like to see the top of the piston, but it looks to me like you were getting coolant into the cylinder. you have pieces broken off from coolant collecting in the cylinder and doing two things: one, the hot piston crown gets brittle from the coolant hitting it at the hottest point (right at the exhaust port side), then you get a hydraulic locking action as the liquid can't escape compression fast enough. on top of that you have your own form of 'water injection' working there. google that for airplanes if you are curious and unfamiliar. that rig was sent from the factory with what kawasaki termed and electrofusion cylinder. as such it can't be bored, but may have already been sleeved so that it possibly can (i say possibly because it may already be at max.) so lots of things to check, and i agree that your water pump seal is out. [/QUOTE]
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Everything Dirt Bike
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89 kx 125 coolant oil mix disaster
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