Clogging commonly occurs when oil seeps past the coil or excess vapor cools and then condenses along the walls of the inner cartridge. When enough oil ends up in the airway between the coil and the exit of the mouthpiece, the buildup can block the ability to draw air through the mouthpiece. This can often be prevented by taking short, light hits and not overheating your oil. We’ve put together a guide for fixing clogged vapes including a full breakdown of best practices so you get the best performance from your vape.