I had the same thing happen to me. It was the equalization hose. It had dry rotted. I just replaced the hose and used zip ties to secure it on. Just check all your hoses. There should be two or more connected to the carb, just look for a loose one or one that is off. Just make sure it is still rubbery and replace it if it is not. Also use zip ties or small hose clamps to keep them on. If she runs it without oil, it will overheat and seize the engine.