Hang on, how do you tell if your coil is burnt out?
If your coil is truly burnt out, you will know about it – the taste of Meche Brûlée is truly unmistakable!
If your coil is only slightly burnt, you may get a slight burnt taste, as if something’s not quite right. Given that we know that burnt coils can produce harmful chemicals, you should probably still change it.
Occasionally, you’ll also get a burnt taste when you have just replaced a burnt out coil. Sometimes this will disappear after a few puffs, but at other times you may need to replace the e-liquid.
Why Do Coils Get Burnt
If you want to avoid burnt coils, the most important thing to understand is why coils get burnt in the first place. This is really simple and it underpins all the advice given in this post.
First, think about when you’re vaping but not getting a burnt taste. When you hit the fire button, electricity flows through your coil and it gets hot. The heat given off by the coil is taken up by the e-juice, which is soaked into the wick, and it turns the juice into vapour. Because you have the juice there to take up some of the heat energy given off by the coil, the temperature of the coil doesn’t get too high.
When the juice in the wick has been vaporised, the wick dries out a little. However, you have a tank full of e-juice surrounding the coil, and this is constantly replacing the juice in the wick. This means that by the time you go to take another puff, the wick is soaked again and everything works as it should.
But what happens when there’s no juice in the wick, or just not enough? Now, when you hit the fire button and the coil heats up, there isn’t much there to take up that additional heat. As a result, the temperature of the coil increases. This leads to two (equally unwanted) things happening:
- The juice remaining in the wick gets “overcooked,” heating up to an excessive degree and causing the PG to breaking down into formaldehyde. In case this needs clarifying: formaldehyde tastes absolutely gross.
- Without anything to protect it from heat, the wick is directly exposed to the glowing-hot coil. Since it’s probably made of cotton, the wick burns. If the wick was completely dry, it would literally erupt in flames. And yes, burning cotton tastes horrible too.
These two things are the key ingredients in the “Mèche Brûlée” e-juice described in the introduction. Burning cotton with notes of formaldehyde. Disgusting with some extra-disgusting thrown in for good measure.
Read more at ecigarettedirect.co.uk