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Everything Dirt Bike
Make / Model Specific
Yamaha
1978 YZ400 Piston Seized
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<blockquote data-quote="SRAD97750" data-source="post: 133781" data-attributes="member: 425"><p>The specks are detonation. They will eventually break off as chips and destroy the piston.</p><p>Lean condition I'm sure... I'll be bumping up the jetting and I'll let you know how it goes...</p><p> </p><p><a href="https://www.dirtbikeaddicts.com/content/threads/full-seizure.6019/" target="_blank">https://www.dirtbikeaddicts.com/content/threads/full-seizure.6019/</a></p><p>-BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="SRAD97750, post: 133781, member: 425"] The specks are detonation. They will eventually break off as chips and destroy the piston. Lean condition I'm sure... I'll be bumping up the jetting and I'll let you know how it goes... [URL]https://www.dirtbikeaddicts.com/content/threads/full-seizure.6019/[/URL] -BIG DAN:thumb: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
1978 YZ400 Piston Seized
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