Since I started running my 98 KDX 220 this year I have been smelling anti-freeze when its hot. At first I figured it was from the over flow but there was no sign that it has been over flowing, whatched the level in the over flow and it hasn't moved, figured it was just the smell from where i had the rad cap off and it had spilled a bit. 60 Km later I can still smell anti-freeze there is even a sweet smell in the exhaust. The bike isn't blowing white exhaust the plug looks good (Light brown on tip and black on threads.) and there is still no sign of a leak.:think Has this ever happened to any one else or does any one have any ideas.