White smoke coming from exhaust [Video]

[DillHD]

So I'v not started my bike in a while (little over a month) so I took it out to be started at first it did'nt start then realized the battery needed charging so I done that and it started pretty much instantly, it idled then the revs went low and cut out, it done this 1 or 2 times (I figured it was flooded?) but after the 2-3rd time starting it idled perfect sounded normal but I noticed white smoke coming from the exhaust so I let it idle 20-40 mins and the smoke was a little better but it was definitely still there. Just looking for some opinions on what it might be. The bike is a 2012 SM 50.

Thanks in advance!

video: https://www.youtube.com/watch?v=kgGWO8rNUPA

[mealexme]

does this only happen when the bike is cold?

Or does it happen on cold days, but not warm?

If yes to the above then it may just be water vapor. It looks like vapor when you had it at idle.

The vapor is caused by small water droplets forming on the inside of the exhaust system due to condensation whilst the bike is off; or simply from water particles in the air, within the system which will, when hot, turn into steam. The white which you see coming out of the exhaust may simply be steam and is nothing to worry about as it happens on all vehicles

Next time you go for a ride of over about 10 minutes (rather than simply leaving it to idle), get off at the other end with the bike still running and see if its stopped.

If there is still white coming from the exhaust, look closely at the tip (don't put your face directly in the fumes though, Its hot and smelly. I know from experience...). There should be a small gap between the tip and the vapor, this is because the heat from the exhaust is turning the water in the air to vapor, much like it did in the exhaust.

If this sounds like what you are experiencing, then all is well

Just one thing to note, I have heard its not good for a 600cc engine to the engine on whilst stopped for more than about 10 minutes, especially air cooled ones as it create hot spots which are designed to be spread with the air flow when the bike is moving. I doubt a 50cc gets anywhere near the same temperatures though, but it may be worth finding out from someone who knows, rather than risking it. P.s, I have no facts to back that up, I may have misheard it as its not something a lot of people say.