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Chainsaw
Husqvarna 390 pistons?
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<blockquote data-quote="Jacob J." data-source="post: 4021791" data-attributes="member: 1014"><p>Hmm...air leak, carbon score, physical defect of some kind, water in gas- I'm running out of ideas here. All I have left is what you mentioned, just the piston being too soft or of inadequate material.</p><p></p><p>Those black streaks on either side of the damage indicate a carbon score to me. Maybe check inside the muffler for any telltale signs of loose carbon?</p></blockquote><p></p>
[QUOTE="Jacob J., post: 4021791, member: 1014"] Hmm...air leak, carbon score, physical defect of some kind, water in gas- I'm running out of ideas here. All I have left is what you mentioned, just the piston being too soft or of inadequate material. Those black streaks on either side of the damage indicate a carbon score to me. Maybe check inside the muffler for any telltale signs of loose carbon? [/QUOTE]
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