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Chainsaw
Cut issue and scored piston: how much is too much?
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<blockquote data-quote="nmurph" data-source="post: 4797788" data-attributes="member: 18671"><p>With a compression reading of 145, he's already lost some compression and he needs remove any deposits in the cylinder. We see some relatively minor scuffing on the piston face, but we don't have a clue how the rest of the cylinder looks.</p><p> </p><p>I read the OP-</p><p> </p><p>A saw cutting crooked is either a bent bar, a worn rail, or unevenly filed cutters.</p><p> </p><p>Oil leaking from a sitting saw isn't usually a problem. The changes in pressure as a saw warms and cools will cause it to ooze oil. There is also a vent for the oil tank and sometimes they can get stopped up and prevent the vent from equalizing pressure. A shot of carb cleaner through them will usually open them up.</p></blockquote><p></p>
[QUOTE="nmurph, post: 4797788, member: 18671"] With a compression reading of 145, he's already lost some compression and he needs remove any deposits in the cylinder. We see some relatively minor scuffing on the piston face, but we don't have a clue how the rest of the cylinder looks. I read the OP- A saw cutting crooked is either a bent bar, a worn rail, or unevenly filed cutters. Oil leaking from a sitting saw isn't usually a problem. The changes in pressure as a saw warms and cools will cause it to ooze oil. There is also a vent for the oil tank and sometimes they can get stopped up and prevent the vent from equalizing pressure. A shot of carb cleaner through them will usually open them up. [/QUOTE]
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