Just one day and it's in this state. Why?

[rokyo87]

Hello.

This is my coil after 1 and a half day (1 and a half tank on kayfun 5) of vaping:

And a wick:

Why is it burned so fast? I vape at max 10 Watts, coil is 1,25 Ohm Kanthal, 28GA so too high temperature or to high watts are not the case, my coils are heating up pretty slow. I am using unflavoured 15DW/85VG e-liquid so neither flavours are the case. My draws last from 2 - 4 seconds. Vapour production is still good, vapour taste is not affected (no burnt taste).

What is this black gunk or layer on the coil? What does it mean from health point of view?

How to resolve this issue? How often do you rewick your coils? How long does it take for your coils to get to this state? At which power (watts) do you vape?

Thank you for your answers in advance.

 

[DavidOck]

The darkening is normal "caramelization" and not a health concern. Continuing the draw for a tad after releasing the fire button may help reduce it.

If it's not changing the taste, no reason to change the wick. When needed, sure, and a dry burn of the coil.

I tend to vape about 8.5 watts across 1.5 Ω, KF2s. I do vape flavored, don't care for the taste of un, and flavors indeed can hasten the browning, some more than others.

 

[Cheallaigh]

you're at high ohms and low amps... in order to burn the cotton, you would have be vaping harder/faster than the wicking can keep up with... as david said caramelization is normal, but yours actually looks burnt in those pics, but that could just be the lighting.

i'm far higher wattage and far lower ohms... so i can't help there.

 

[Rule62]

It's been a while since I've used a Kayfun, but from the first picture, it looks like your wick looks a bit heavy. It may be being choked, by being too tight in the coil, and can't keep up. Also, by the looks of the wick tails, they may be blocking, or partially blocking the juice holes. Try rewicking a little looser, and trim the tails so that they just barely touch the ledge.

 

[Bunnykiller]

looks normal to me....

 

[Kickingthesticks]

I vape at 1.3-1.5 ohm 12-15 watts on flavored juice 3 days it will look like that. Using unflavored I can go a week. Mind you I'm using clapton coils and organic Japanese cotton so they gunk up faster than regular coils. Only reason I can think of why your coils are gunking so fast is either to much wick, bad cotton, or its still got a lot of heat and still vaporizing after you hit.

 

[NOVA jon]

"Sweet" candy and bakery type juices have a tendency to do that! What juice are you vaping?

 

[Maestro]

It's not burnt. Just residuals piling up. Just keep vaping it until it stops performing or the taste goes bad.

 

[zoiDman]

...


Why is it burned so fast? I vape at max 10 Watts, coil is 1,25 Ohm Kanthal, 28GA so too high temperature or to high watts are not the case, my coils are heating up pretty slow. I am using unflavoured 15DW/85VG e-liquid so neither flavours are the case. My draws last from 2 - 4 seconds. Vapour production is still good, vapour taste is not affected (no burnt taste).

...

If you are getting Good Vapor, and it Doesn't Taste Burnt, then I think things are Pretty Much Normal.

Just going by the Picture, I'm kinda with Rule62 though. It looks like you might be using a Tad Too Much Cotton for you wicking.

 

[Kickingthesticks]

You can try building with 30g kanthal for a faster ramp and cool down. I'm not to familiar with the Kayfun but sometimes a high vg juice like what you are using can cause wicking issues in tanks with smaller juice holes.

 

[rokyo87]

Thank you boys and girls. That was helpful. I will try with less cotton... So, this caramelization is normal thing? Even with unflavoured e-juices?

 

[DavidOck]

That you're not getting a burnt taste suggests it's not a burned wick, just slightly "gunked." But too tight, can lead to burning as it can choke off the juice flow. Too loose will also bring problems, of course.

Cotton will expand a bit when wet, so it's pretty easy to wind up with a bit too much

 

[Maestro]

You're boiling off the liquid and leaving behind the solids. Ever take a look at a humidifier pad?

 

[puffon]

Try rinsing the wick. If it's burnt it will leave a brown spot.
If it's caramelized it will rinse clean.
Could be the VG causing the build up.
I have a REO always loaded with 25/75vg unflavored, and can go a couple months before rewicking or dryburning the coil. Even after a couple months the wick is still white. 6ml per day.

 

[Flt Simulation]

You're boiling off the liquid and leaving behind the solids.

But the OP is using unflavored juice ... Can't be many 'solids' in unflavored juice?

 

[Cheallaigh]

there can still be a slight bit of solids...

 

[Lessifer]

But the OP is using unflavored juice ... Can't be many 'solids' in unflavored juice?

well, it is pg/vg/nic, not pure distilled water. I agree with the too much cotton, maybe not enough airflow.

 

[rokyo87]

Thank you all again. I think it was too much cotton. I will try with less. So, your coils gets black too with residue on them? Do you have any pictures so I can put my minds on peace?

 

[smacuser]

Fryday the 13th?

 

[rokyo87]

Fryday the 13th.

Was yesterday, nothing bad happened. At least in Slovenia.