Fixing a Burnt-Tasting Vape Coil
Part of Coils, priming and burnt hits
Why it happens
A burnt taste almost always means the cotton wick inside your coil has been scorched. In most vape tanks, a coil is a small metal housing that contains a length of wire wrapped around or threaded through absorbent cotton. The cotton holds the e-liquid and delivers it to the wire. When you press the fire button, the wire heats up and vaporizes the liquid held in the cotton. If the cotton is dry when the wire heats, the cotton itself burns, and that scorched cotton keeps releasing a harsh, charred taste every time you vape afterward.
Several conditions lead to a dry coil. The most common is firing a new coil before the cotton has fully soaked. Fresh cotton is tightly packed and needs several minutes to absorb liquid. Another cause is letting the tank run too low, so the cotton is not being fed. Chaining many puffs in quick succession can also outpace the wick, because the cotton cannot pull in fresh liquid as fast as the coil is vaporizing it. Finally, a device set to too high a wattage can apply more heat than the coil is rated to handle, which singes the cotton even when it is wet.
In short, the burnt taste is a symptom of burned wicking material, not of the liquid itself.
Step-by-step fix
Once cotton is scorched, no amount of cleaning will fully remove the taste. The reliable fix is to replace the coil, and then prime the new one correctly.
- Disassemble the tank over a paper towel. Remove the base of the tank and unscrew the old coil from the base.
- Dispose of the old coil. Rinse the remaining tank parts, including the base, the glass, and the mouthpiece, with warm water. Dry them fully with a clean cloth or paper towel before reassembly.
- Take the new coil out of its packaging. Locate the cotton openings on the sides of the coil and the open top of the coil.
- Prime the coil. Apply a few drops of e-liquid directly onto the exposed cotton through the side openings and through the top opening. Rotate the coil as you go so every visible cotton surface is damp. Stop before liquid drips out the bottom.
- Install the primed coil into the base, then fill the tank to the recommended fill line. Leave a small air pocket at the top rather than filling to the absolute brim.
- Reassemble the tank and let it sit upright for five to ten minutes. This rest period lets the cotton draw in liquid on its own, which protects it when you first fire the device.
- Start at a low power setting, well below the coil's recommended maximum. Take a few short, gentle puffs without inhaling deeply. This slowly introduces heat and helps the cotton finish soaking.
- Gradually increase the power in small steps until you reach your usual setting. Stop and back down if you taste anything harsh, and let the coil rest before trying again.
If the device has adjustable airflow, opening the airflow slightly more can help the coil stay cooler during this break-in period.
If a burnt taste returns on a coil that is not old, the coil was likely damaged by dry firing, and it should be replaced rather than pushed further.
Prevention
Prevention comes down to keeping the cotton wet and keeping heat within the coil's limits.
Prime every new coil before first use. This is the single most effective habit for avoiding burnt coils, because most burnt coils are new coils that were fired dry.
Keep the tank filled above the cotton openings on the coil. When the liquid level drops below those openings, the cotton stops receiving liquid and begins to dry out.
Pace your puffs. After several draws in a row, pause for a short time so the cotton can reabsorb. If you prefer to vape continuously, consider a coil or tank with larger wicking openings that can keep up with heavy use.
Use the coil within its printed wattage range. Every coil lists a recommended range on its housing or packaging. Staying within that range prevents the wire from overheating the cotton. If you switch to a coil with a different resistance, adjust the power setting to match the new coil's range.
Allow a short soak time after refilling, especially after the tank has sat empty or has just been cleaned. A coil that has been allowed to dry out needs time to re-wick before it is fired.
Finally, replace coils on a schedule. Even with careful priming, cotton degrades over time and gradually stops absorbing as well. When vapor output drops or the taste dulls, it is time for a new coil before the wick begins to scorch.
This guide is general technical information and is not medical or legal advice.