Hmm, I was going to start a thread but did a search and lucked out and found this thread. The exact same thing happened to me, I've been
vaping on my 3.1 for a few months now without the slightest issue, microcoil & cotton. Also have a rocket kayfun which is virtually the same thing. Suddenly over the last ~week, after months of perfection, it's giving me dry hits. And it's the most f'ed up "voodoo" magic going on, I've cleaned it, I've rebuild the coil over 15 times now, raised the coil higher, lower, more cotton less cotton, thicker, thinner, longer shorter, whatever the hell is going on, it will NOT go away. I can flood the chamber and still wont wick correctly. Doesn't matter if I block the juice channel or not.
The frustrating part, is the rocket is
vaping like a champ still. Thinking maybe I suffered brain damage from vaping, I rebuilt the coil & wick several times, and even made some intentionally "bad" wicks, and it's performing just fine. Something is suddenly wrong with my 3.1 es, and I have absolutely no idea what could possibly be wrong.
My original setup involved threading the cotton, inserting the chimney, snipping the cotton about a centimeter above the chimney and pushing the wicks in so they rested across each deck with a gap between the wall to expose the juice channels. Mind you, even with them covered it worked flawlessly and I had never been able to get a "plugged juice channel" I've read about, it just worked no matter what I did. Later evolved into snipping the wicks shorter, maybe two millimeters in length above the chimney as that's as short as I can get them with my scissors, which made them about long enough to make the ends contact the base which seemed to wick even better (capillary action?). Also done wicks where I snip them short with the chimney off, position them and secure them with e-juice, then assemble which worked just as well only more time and labor intensive (takes only seconds with the chimney on to push the wicks in, expose the juice channels, and apply a couple drops around the coil).
Feels like I've been dreaming with how bizzare this thing suddenly performs, on a rewick it performs fine for awhile, but as the tank level gets lower it always seems to rewrite the laws of physics and defy the design of the kayfun. Last night I build a fresh wick, filled it up, vaped for awhile then went to sleep. 11 hours later wake up, and instantly dry hit and you can hear the coil still hissing after I let the button go for several seconds (happens with a wick drying out, not enough juice to cool it down).
I found a replacement 3.1 base I had received in the mail sometime ago (had a faulty fill valve, which I plugged with silicon tape and hadn't touched the replacement) so I'm going to just give in and try that and see what happens. I really can't find any proof it's my build, so something else is going on.
