Re: Fuel Boiling Out Of Carburetor

Posted by Fish'n Jim On 2015/9/6 18:24:13

Not only an operational problem but a big fire hazard made worse if you store inside.
It shouldn't do that even with modern fuel, even if you're getting E15 or worse. So don't excuse the problem on the fuel, that's a common myth, but does not solve the problem.
Could be a vacuum leak, that's aspirating the fuel or going to the wrong place. Vacuum lowers Boiling Point. Takes a while for the vacuum to dissipate on shut off. Carb might be leaking down through the bore then vaporizing from the manifold heat and vapor bubbling back up.
It would be commonly what sounds like what O_D said, don't assume, check that's all in order underneath. Float could be stuck, dirt in the carb, vent plugged, etc. I'd tear down and rebuild carb first.
I would not run it like that and make sure the insurance is paid up.