To unclog a Delta 8 pen, simply take a long, slow drag from the pen. This can be repeated a few times until the oil has heated up enough to clear from the mouthpiece. Most of the time, pens get clogged from being left upside down in your pocket immediately after use. It’s always a good idea to let your vape cool for just a second before putting it away. This will help prevent clogging in the first place.