I bought an 04 plate yamaha YQ100 scooter off ebay and the engine has a rather noisy rattling / vibrating noise coming from the engine. It starts and rides, but noisy.. Any ideas????????

M6rxc, August 2009

Thanks for the info, i will book it in for a service asap, cheers..

m6rxc, August 2009

Hi,
first thing first check all your oils etc. If not changed for a while I would change it with your filter.
It could be low engine oil.
If this does not cure it I would look at check valves and timing. If you dont know what your doing get someone who does to do this.
Proabably needs a jolly good service

BB, August 2009