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Old 06-10-2012, 10:32 AM
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After that many miles you could be experiencing a pile of carbon on top of the pistons and combustion chamber. I would use some ATF down the carb while it's idling, followed by an overnight soak, followed by a quart of water being trickled. Then, take it out and beat on it til the smoke and steam clear up. See how it acts after that.
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