It also will intermittently puke gas out of the front of carb when I’m priming it.
That means the float is not shutting off the inlet gas when the carb bowl gets full. This can be caused by the float level being set too high, float in upside-down, float hanging up on an oversized bowl gasket from a cheapie Chinese copy of a carb kit, dirt in the float valve needle and seat, float not moving freely on its hinge, etc.
A crude test of the float and valve is to blow into the fuel inlet with the carb off the motor and empty (yes I blow with my mouth) – you should be able to blow air into it. Then turn the carb upside down and blow into the fuel inlet – you should not be able to blow air into it, as gravity pulled the float and shut the valve. This checks the float valve , but if the float level is set way too high, it can still flood when priming.
Float should be level and parallel to the carb body when held upside down with the bowl off like in the photo below. Bend the tang on the float to adjust.
Dave
