As an added step, after you’ve partially filled the lighter with butane, take a blunt object and reinsert it into the valve to release just a bit of the gas. Some of the gas will have turned to liquid as you fill the lighter, so this gets rid of that liquid. After you’ve done this, fill the lighter with a bit more butane (squeezing the can for just about 1 second).

To empty the lighter of any excess fuel, use a blunt object—such as the eraser tip of a pencil or a capped pen—to press down on the valve. Hold the lighter so that the opening to the valve is facing upwards, then press your blunt object into the opening and pump it a couple times to release the fuel. You’ll hear a hissing sound that lets you know the fuel is coming out.