So last night I bought 3 new vape juices . they all seemed to work just fine. after I got done with one coil I saturated the other coil and switched to a new juice. it worked fine but I didn't like it so I decided to go back to the other juice and coil. well needless to say I had instant problems. the only real noticeable difference was a crackle and vape juice was in my throat. niether of my coils worked right after that. I found if I pressed on the center of the coil with a flat qtip it worked better. what do you think the problem is?
When you vape, a slight vacuum is pulled in the tank, slowing the flow of juice into the coil. When you open the tank it releases the vacuum and allows juice to "flood" the coil (over-saturate it). I usually take a q-tip or paper towel and wick out the excess ejuice. Also clean out your drip tip (rinse, blow, whatever your method). Take a few long pulls at a little higher power than normal and it should clear, then go back to your normal power. This works for me with stock coils in a triton mini, nautilus mini, kabuki clone.
Edit: At some point after you have used a coil for a number of days (depending on the juice) it will flood more and not wick as well, and/or taste harsher, and then its time to put in a new coil.