Originally Posted by Vette Daddy
You have a float that is not working properly, as Roy stated. You'll need to change the oil NOW. Do not run the car with raw gas mixing with the oil. Check the plugs for the wet ones. This will tell you which carb is malfunctioning.
Plus you may be washing down the cylinder walls. I would put a little Marvel Mystery Oil in the cylinders and rotate the engine after the oil change. Additionally, you may want to make sure there is no gas ponding in the exhaust. I have seen mufflers exploded. Good luck.