Quote:Bad rings cause oil burning: this oil-burning smoke is white but with a distinct bluish-white color. And the smoke doesn't disolve into the air, it only blows away into the wind.

If you don't see a bluish tint to it, it's not from bad rings.

In the morning it is normal to have white smoke, even brand new cars do this. It is water vapor and dissapates into the air as you watch it.

Now the greyish and blackish smoke, that's unburned fuel. Not from bad rings, but from carburetion or ignition problems. When the engine is warmed up, load up the choke and see what affect it has. You should see black smoke.