Your passenger side steel fuel line has a leak. It goes through a sheet metal clamp that bolt to the inboard side of the head. Over time, the engine’s vibration wears a hole in it. I’ve been getting them from a vendor on Amazon. Look for the one with the rubber grommet on the tube. If you can’t find it, you can use a strip of sheet rubber like a cut up inner tube. Use it for insulation against the clamp. Use oring lube on rubber sleeves at the nuts. Tighten nuts until the stop and then add about ten pounds.