[James Brown]

Most smoking on start up is not oil but unburned fuel. Mine does that when it first fires up. (first nanoseconds). Engine is too cold for it to be oil. More on carb engines. You can smell the half burned fuel wafting by, mmmmmmm love that, then it changes to a more Olly smell and a little bluish for a few seconds. So yeah, make sure your looking at the right thing before you fix something that ant broken. Food for thought.

BTW, sometimes I run 100LL avgas, man, that stuff smells great!! (not many brain cells left).