Spitting, or spitback, is the name for the occasional super-hot droplets of e-liquid that shoot in your mouth when you’re vaping. If you watch an RDA coil firing, you can sometimes see this happening, usually accompanied by popping sounds. The droplets spit in all directions, but if you’re unlucky, some of them can shoot up into the mouthpiece.
Spitback has a simple cause: e-liquid gets pooled up on the coil itself and gets “cooked” instead of being vaporized. It spits similar to the way boiling water does, and with you inhaling from the tip, you can easily catch a droplet or two. The problem is closely linked to flooded coils, but, in some cases, it can happen even without flooding. Here are some ways to prevent spitting and popping from occurring.