KymcoForum.com

My 50 cc Kymco Agility gy6 4t got 13,000 kilometer. Done all the upgrade de restriction mods and going fine for about 7,000 kilometers. On the way to work just started to vibrate, no vibration when idle, only when picking up revs, done whole exercise without belt and still vibrating, changed timing chain tensioner with new longer shaft tensioner. Still vibrating, sound seems to come from bottom on variator side of motor block. I opened tappid cover and turned engine over by hand to check timing chain for broken links, but none broken, still vibrating, Also put in new sliders in variator, still vibrating. I got new Timing Chain, guides, tensioner, complete gasket set. Need help/idea where to go next.