400ex smoking

[exboomer]

My 05 stock 400ex will smoke a liitle on cold start up. The quad has probably 15-20 easy hrs max. I changed the oil a couple of months ago and have ridden the quad about 5 hours since. I used the Honda GN4 10-40w (and yes, I double checked the level and it's not overfilled). The smoke appears to be light grey. Is this quad burning oil? It seems like low hours to have valve seal problems. It seemed like this started after the oil change. Should I be concerned?

[JJ69]

if you overfill it, will it smoke white?
i just changed my oil recently in my x and its poofing white smoke now.. would too much oil have f*d over my valves?

[81 clark racing]

nope nothing to be worried about. did u put a pipe on it or anything after market? its common to smoke on start up if ur jetting is off. and if you are using your choke to start it up thats the problem nothing to worry bout. it should stop smoking after the motor is warmed up and cleard out from the choke