My NC30 with 19k km makes a tapping sound when started on choke, sound only lasts a few seconds and i don't know where it's coming from, is there anything i should worry about? here's a video of the sound: https://www.youtube.com/watch?v=yzbZxa0qui0 (sorry for the moving camera, i was trying to see if there is difference if the mic is above or below the bike).

An exhaust leak can give a mechanical tapping sound worth checking around that first at front and rear headers before worrying about any other cause.

When did you last check the valve clearance.

hunter wrote:When did you last check the valve clearance.

I don't know if the previous owner ever did valve clearance, it had 14.7k km on it when i bought it, isn't 19k km a bit early for valve clearance to need adjustment ? Thank you for your reply.

Found the Issue, The exhaust end can is a bit loose due the rubber that goes around the support mount has split.