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Yamaha MX & Off-Road Dirt Bikes
'99 YZ250 suddenly stopped running
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[QUOTE="marcusgunby, post: 133674, member: 17066"] The particles on the piston top could be detonation or parts of the main/big end bearing breaking up.The piston pin being so hard to remove normally means something has got real hot.Has the head got lots of small pin holes in it? [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
'99 YZ250 suddenly stopped running
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