I use 3/8" ductile aluminum fuel line in my kit car. (I have it enclosed in a larger conventional fuel line for vibration protection.)
The connection to the fuel line that feeds the carbs is just a slip-on from the aluminum line to the fuel line - fastened with a couple hose clamps.
I think I messed up big time by turning on the ignition when the battery was on charge. I'm not sure. Does the charger put out a lot more than 12 volts?
In any event, the fuel just streamed by the clamps, leaking to the ground. So, I've got a bad fastening.
What would you use to fasten the 3/8" aluminum line to the carb fuel line? I'm thinking of a fluted brass piece that slips tight into each line and then deforms the line under the pressure of a hose clamp.
Gawd, I'm am idiot. (This is the car that blew an oil line and burst into flames once.)