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Blue smoke when starting

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I have a VOR 530 SmE and have started to notice that when I start it from cold that until it gets hot there is noticable blue smoke coming from the exhaust.

Once it is hot the smoke goes.... Is this a sign of worn valve stem seals?

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I have a VOR 530 SmE and have started to notice that when I start it from cold that until it gets hot there is noticable blue smoke coming from the exhaust.

Once it is hot the smoke goes.... Is this a sign of worn valve stem seals?

Or worn rings will do it too, blow-by until everything heats up, expands and takes away the loose tolerance

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