FZ6 2006 knokcing sound when rPMs go down - Yamaha FZ6 Forums - FZ6 Motorcycle Forum
 
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post #1 of 2 (permalink) Old 10-29-2015, 09:46 AM Thread Starter
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Question FZ6 2006 knokcing sound when rPMs go down

Hi guys,

I am hearing a knocking sound from the left side of the engine. The sound can be heard after revving the engine and the rPMs start to decrease/ go down after 4000 to idle. When i'm revving the bike and the rPMs go up, I can't hear the sound.

You can hear what I hear in this video: https://www.youtube.com/watch?v=6MhL...ature=youtu.be on 0:25 sec.

It's not a sound from the chain tensioner or the valves. The alternator is ok as well. There is a doubt that it could be the rod bearing or piston pin, but why do I hear it only when rPMs goes down?
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post #2 of 2 (permalink) Old 11-05-2015, 08:26 AM Thread Starter
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