Originally Posted by F470
I have this one.
Okay so it is vented, just a new design. Never seen one of these, so no idea how robust the design is.
As SIBRider says, cracking the fill cap takes the valve out of the equation which simplifies troubleshooting a bit.
Will the thing run if you keep pumping the primer ball? How about turning the choke off (assuming it's manual) after a couple of cranks?