Return line leak to quick disconnect

[Gkarunner]

Have a 200 Road King Classic, how do I know if the o-ring on the return line to the tank is leaking or if it is the quick disconnect on the tank that is leaking

[aceharleywrench]

You need to provide us with more information.Where do you see the leak? Is it strictly when the bike is running or when the engine is off? There is no "quick disconnect" on the Magnetti Marelli fuel lines,they screw in to the tank.There is an o-ring on the line plus an insert that screws into the tank that must be present or it will leak.Did you change tanks without swapping the inserts over?