62 LANCER GAS LEAK

The rubber gaskets around the sending units are a common issue, especially when the sending unit has been replaced with a new one. The tangs on the new lock rings are never bent up enough to properly engage the lock and bring the lock ring down tight enough to make the gasket seal, so they leak. They ALL do it, unless you take some pliers and gently bend the tangs on the lock ring up a little to make it tighten down on the gasket. It's much easier to do with the tank out of the car.