An outboard marine engine vapor vent control system, comprising: i. a fuel connector having an elongate fuel pin with a fuel passage (32, 34); and ii. a vapor vent control apparatus with a) a body having a fuel inlet with a one-way valve disposed therein, wherein the fuel inlet is configurable in fluid communication with a liquid fuel reservoir of an engine and said fuel inlet being configured for receipt of said fuel pin, wherein, when attached to the fuel pin said one-way valve automatically moves to an open position to allow liquid fuel to flow through said one-way valve to the fuel reservoir and when detached from the fuel pin said one-way valve automatically moves to a closed position to prevent the flow of liquid fuel out of said fuel inlet; b) a vapor vent passage configurable in fluid communication with the liquid fuel reservoir and an air intake of the engine; and c) a vent pin disposed in said vapor vent passage, said vent pin being automatically movable between a first position upon attaching the fuel connector to said fuel inlet and a second position upon detaching the fuel connector from said fuel inlet, wherein, when in said first position said vapor vent passage being opened to fuel vapor flow and when in said second position said vapor vent passage being closed to fuel vapor flow, wherein said vent pin is magnetically actuated by said fuel connector, and wherein said vent pin is ferrous and said fuel connector has a magnet configured to magnetically actuate said vent pin to said first position. i. a fuel connector having an elongate fuel pin with a fuel passage (32, 34); and ii. a vapor vent control apparatus with a) a body having a fuel inlet with a one-way valve disposed therein, wherein the fuel inlet is configurable in fluid communication with a liquid fuel reservoir of an engine and said fuel inlet being configured for receipt of said fuel pin, wherein, when attached to the fuel pin said one-way valve automatically moves to an open position to allow liquid fuel to flow through said one-way valve to the fuel reservoir and when detached from the fuel pin said one-way valve automatically moves to a closed position to prevent the flow of liquid fuel out of said fuel inlet; b) a vapor vent passage configurable in fluid communication with the liquid fuel reservoir and an air intake of the engine; and c) a vent pin disposed in said vapor vent passage, said vent pin being automatically movable between a first position upon attaching the fuel connector to said fuel inlet and a second position upon detaching the fuel connector from said fuel inlet, wherein, when in said first position said vapor vent passage being opened to fuel vapor flow and when in said second position said vapor vent passage being closed to fuel vapor flow, wherein said vent pin is magnetically actuated by said fuel connector, and wherein said vent pin is ferrous and said fuel connector has a magnet configured to magnetically actuate said vent pin to said first position. a) a body having a fuel inlet with a one-way valve disposed therein, wherein the fuel inlet is configurable in fluid communication with a liquid fuel reservoir of an engine and said fuel inlet being configured for receipt of said fuel pin, wherein, when attached to the fuel pin said one-way valve automatically moves to an open position to allow liquid fuel to flow through said one-way valve to the fuel reservoir and when detached from the fuel pin said one-way valve automatically moves to a closed position to prevent the flow of liquid fuel out of said fuel inlet; b) a vapor vent passage configurable in fluid communication with the liquid fuel reservoir and an air intake of the engine; and c) a vent pin disposed in said vapor vent passage,