Repair guides and support for motorcycles manufactured by Yamaha Motor Company.
Ovi Ovedeb @oviovedeb
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投稿日: 3日前2026年6月14日
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bill @ruggb
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it almost sounds like an electrical spark discharge, but the engine seems to be running without hesitation.
My other thought would be the piston hitting a valve - that would be rather serious.
I can't think of anything else to cause that noise.
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