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[QUOTE=african888;2596550]cant describe pero hindi naman sya yong tok tok tok pag nag revolusyon ka from cold start. me iba lang tunog pag rev ka. pero after 5mins of warm up, wala na noise kahit i rev ko.

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well, engine knock has been typically described as the sound of marbles falling onto a metal tin roof.
and valve chatter, like multiple metallic clicking sounds.
either way, you probably have to bring it to a mechanic for possible timing adjustment and/or valve lash adjustment.
good luck.
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