I've been vaping now for about 6 weeks [...] sometimes it makes a gurgling noise like there is juice escaping with the vape. [...] It's a kangertech sub mini
Like one of these?
They're mass-produced in China, but they're not "poor" quality by any means. Fairly middle-of-the-road, I'd say. Not bad for a new vaper,
if you enjoy the big airflow and "direct lung-inhale" style of vaping where you just "breathe in" straight from the device. Not so much, if you prefer the more "mouth-to-lung" style where you draw the vapor into your mouth first, like through a straw, and
then breathe in. For that you need a really tight airflow, and while these sub-tanks
can have their air choked off to some degree, it's not really what they're made for and it doesn't suit them all that well. Perhaps an Aspire Nautilus or Nautilus Mini, or maybe somebody can recommend a more modern counterpart?
How often have you changed the atomizer/"coil head" (the little removable part with cotton and wire in, that screws into the base of your tank from the inside), in those six weeks? Hopefully not "zero." Gurgling could be a sign that it's time for a new one, especially if it only started doing it lately. Your unit, if you bought it new, probably came with one prefab coil head (all-in-one, disposable) installed in it already as well as a spare one in the package with it, (the spare might be a different "resistance" than the pre-installed one -- if I remember correctly, mine had a 0.5-ohm one installed, and a 1.3 or maybe 1.5-ohm as the spare; the
lower number will generally have larger wire and require more power, while the
higher number will have thinner wire and use a lower power setting) and also a rebuildable "RBA" part (Re-Buildable Atomizer) where you have to take it apart and replace just the wick and wire inside of it. You don't have to use the RBA if you don't want to, but do keep it around as there will probably come a day when you will decide you do want to fiddle with it after all. For now, though, focus on the prefab one. Unscrew the tank from your device. Remove the mouthpiece (makes it easier to set the tank down in a minute), then turn it over and unscrew the bottom base part (like you would to fill it, unless you got the top-filling "TopTank" version), and set the top part down on a solid surface. Once the base is exposed, you can unscrew the atomizer from the base, then attach the replacement atomizer, "prime" the new atomizer by putting a drop or two of e-liquid on any exposed cotton on the sides and a little down the middle*, then refill and reassemble the tank (or reassemble then refill, if you have the top-fill version). You'll want to pick up some more spares too, probably from wherever you got it in the first place. How often they need changing really depends on too many factors to list all of them (do you use flavored or unflavored and if so,
what flavor; nic, no nic, or NET; high power or low power; vape occasionally or all day long, etc., etc., etc.), but generally it's on the order of "a couple times a week" to "every couple weeks," depending. Eventually you will start to get a feel for it, but until then, if you think your coil
might need changing, go ahead and change it. Better to have a fresh one when you don't need it, than keep using an old one longer than you should.
*(This
can cause some slight gurgling initially, since it's easy to get
too much liquid in there and get some down in the air path before the cotton soaks all of it up. This should self-remedy, though, after just a couple of vapes off of the new coil as it boils off the excess liquid. And it's still better than the alternative since, if you don't prime the coil, you run the risk of scorching the wick if you fire it before the cotton has been fully saturated. And once a wick is scorched or singed, it's all over, it will taste bad/burnt forever after.)
Sorry if you knew all that, it's hard to judge from across the 'net what people do and don't know already. Also what power level (watts setting) are you using on your device? (For that matter, what
is your device? Did you get the whole kit with the device and tank together in one box, or did you get them separately?) Gurgling could also just be a sign of too-low a power setting; there's just not enough "oomph" to vaporize all the liquid fast enough, and so you end up with some still-unvaporized liquid getting into the airflow path. There's not much you can do about that except either turn up the power setting, or else use a thicker more syrupy (higher "VG" content) e-liquid. Or, again, just get a different tank entirely if the high-power, high-cloud, big-airflow style of the SubTank is not your particular cup of tea.