Originally Posted by Peter_C
Well you would be able to smell fuel big time, and it probably wouldn't be running very well.
Not so. We are talking about air fuel mixture. Explain how you can smell that.
You would have to run it a sustained high revs before you could determine whether it wasn't running right and then with a restricted flow. (Which is the white smoke). As soon as you come off revs it stops running rough.
This ain't the first time at this