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Dirt Bike Brands - Other
Black oil dripping from pipe...why?
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[QUOTE="rmc_olderthandirt, post: 1368585, member: 68872"] The oil is from the oil/gas mix that two strokes require. The fact that it didn't burn completely in the cylinder is an indication that the combustion temperature is too low, which could be because it is jetted too rich or perhaps because you simply aren't riding it hard enough. If it runs good, your happy with the performance and it isn't fouling plugs then you can just accept the fact that there will be oil dripping from various spots, usually out the pipe. There should be a seal (probably just an O-ring) that keeps the exhaust and burnt oil from seeping out the shafts of the power valve. The fact that oil leaks out there indicates that the seals are bad. Next time you are tearing into that area I would plan on replacing the seals but otherwise I would just let it leak. Rod [/QUOTE]
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Dirt Bike Brands - Other
Black oil dripping from pipe...why?
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