It runs great for 15 minutes, then fills the intake up with oil and of course causing the engine to smoke, I changed the crankcase breather assembly and that didn’t fix a thing. What are the chances of a head gasket? Or what else should I look into? And no the oil is not over filled.
Check the oil
If it is thin , smells like fuel or is too high then the carb float is stuck & flooding the engine dilluting the oil .
Run the engine for 10 minutes stop it, count to 10 then pull the dip[ stick
Smoke rising from the tube confirms that Star Tech has it right and the gasket has blown between the cylinder & push rod tubes.
