Originally Posted by IDRIDR

Lisa,
You may have a stuck or poorly adjusted carb float that is allowing the fuel to pour through the carb, cylinder, and contaminate the oil, making it over-full and blowing out. Check your oil level before draining it and see if it is over-filled and if there is any hint of fuel there (smell it). I can see a grain of sugar or the sugar-slime-gunk sticking a float needle. Do you know how to check float level?

Change the fuel lines, filter, etc.
Good luck.