I have purchased Xikar fuel, ronson fuel, zippo fuel. Same results in all 3. And I do purge the lighter of the gas / air inside before filling.

But after I fill, I seem to be filling with air. Because the flame wont light up. And when I hold the gas ON and hold the mouth close to my lit stove, I get a very light blue flame. Then i know the tank is filled with more air than gas, and lo & behold when I purge, its air.

Its like 3 times purge, refill, but the tank seems to fill up with air.

I will check out the video as suggested. Does anyone have a link?