My new to me 748 will expel white smoke after I shut it off. It only comes out of the left exhaust. It does have a slightly sweet smell. And it doesn't expel much smoke. I've read a bunch of posts on this forum that leads me to believe it's leaking coolant into the engine. But is it weird that it only happens when I turn the bike off? Also I've only run it for short jaunts. 10-20 minutes at a time. I've read that if you run it for those short periods, that might be the cause of some smoking. But I've been nervous to run it for longer periods because of the potential that it might have coolant in the engine. Any insight would be greatly appreciated.