Yep...good advice given here. On the Carter BBD the brass tube that sticks out and is cut at an angle is actually the bowl vent. No liquid fuel should ever come out of it. So by observing it when you did, that was most of the diagnosis.

If it's been run this way for very long you'll also find the spark plugs to be fouled (black and possibly wet depending on how recent). Also check the oil to make sure it hasn't been contaminated by large amounts of fuel.