What type of atty? Is it for the ego-t or regular ego?
For either one, you should definitely blow the primer that's in there. A regular one requires that you drop like 4-6 drops and let it sit for a minute. As for the ego-t, after you blow the primer out of it. Just put in the freshly filled
tank and take a couple of primer puffs without pushing the button. Then you can go ahead and take a hit.