A crank sound and you undoubtedly have a timing gear problem. This is mainly experienced or heard when the timing chain or belt splits and the engine dies and produces one last hiccup.
Basically, the timing chain is one component of the internal combustion engine that supports and controls the engine’s valves. When one or two teeth are skipped out of the chain, it places the timing off on the valves considerably, meaning that the acceleration and emission of the bike crazily shift and do speeds up and slow-downs as you crank the idle quality. In some cases, the bike may start but in others, it often won’t start.
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