A burnt taste from your vape is one of the most unpleasant experiences for any vaper. Instead of enjoying your favourite e-liquid flavour, you're met with an acrid, harsh sensation that can ruin your vaping session and potentially damage your coil. The good news? Burnt hits are almost always preventable once you understand what causes them.
In this guide, we'll explain exactly why your vape tastes burnt, what's happening inside your device when you get a dry hit, and the practical steps you can take to avoid this problem entirely.
What Causes a Burnt Vape Taste?
When your vape tastes burnt, the issue lies within the atomiser, specifically with the relationship between your heating coil and wicking material. Every vape device contains a coil (the heating element) surrounded by wicking material, typically cotton, which absorbs e-liquid from your tank and delivers it to the coil for vaporisation.
Under normal conditions, the saturated wick feeds e-liquid to the coil, which heats and vaporises it into the aerosol you inhale. When you fire your device with insufficient e-liquid on the wick, the coil instead heats the dry cotton directly. This causes the wicking material to singe or burn, producing that characteristic burnt taste.
There are several reasons your wick might run dry:
- Empty or low e-liquid tank – The most straightforward cause; without sufficient liquid, your wick cannot stay saturated
- New coil not primed properly – Fresh coils need time to absorb e-liquid before use
- Chain vaping – Taking puffs in rapid succession doesn't give the wick time to re-saturate
- Wattage set too high – Excessive power vaporises liquid faster than the wick can replenish it
- Thick, high-VG e-liquids – These absorb more slowly into wicking material
- Coil gunk build-up – Residue from sweetened e-liquids can block e-liquid flow to the coil
Dry Hits vs Burnt Hits: What's the Difference?
Understanding the distinction between dry hits and burnt hits can help you prevent permanent coil damage.
A dry hit is an early warning sign. You'll notice reduced vapour production and muted flavour - the e-liquid taste becomes weak or disappears. This happens when your wick isn't holding enough moisture, so your coil can't vaporise sufficient liquid. At this stage, no permanent damage has occurred.
A burnt hit is what happens if you continue vaping through dry hits. Once the wick runs completely dry, the cotton itself begins to burn. You'll experience a harsh, acrid taste that's unmistakable. Unfortunately, once your wicking material has burnt, the damage is permanent - no amount of re-priming or soaking will restore it.
If you notice a dry hit, stop vaping immediately. Give your wick time to re-saturate or check your e-liquid levels. This simple habit can save your coils from permanent damage.
How to Prevent Burnt Hits
1. Prime Your Coils Correctly
Proper coil priming is the single most effective way to avoid burnt hits with new coils. Priming means saturating the wicking material with e-liquid before you fire your device for the first time.
How to prime a vape coil:
- Locate the wicking ports on your coil - small holes on the sides where you can see the cotton
- Apply 3-5 drops of e-liquid directly onto each wicking port
- Add a few drops into the top of the coil as well
- Install the coil and fill your tank with e-liquid
- Wait at least 10 minutes before vaping to allow full saturation
While some manufacturers suggest 5 minutes, waiting 10 minutes or longer provides better results and reduces the risk of burning a brand-new coil. For high-VG e-liquids (70% VG or higher), extend this to 15-20 minutes as these thicker liquids absorb more slowly.
2. Keep Your Tank Topped Up
Running your tank too low is a common cause of dry hits. When e-liquid levels drop below the wicking ports, your wick cannot absorb liquid effectively. As a general rule, refill when your tank reaches approximately one-quarter full - don't wait until it's nearly empty.
3. Adjust Your Vaping Pace
Chain vaping, or taking multiple puffs in quick succession, doesn't allow your wick sufficient time to re-saturate between hits. Try to pause for at least 15-30 seconds between puffs, especially when using high-VG liquids or taking longer draws.
4. Check Your Power Settings
If your device has adjustable wattage, vaping at excessive power can vaporise e-liquid faster than your wick can supply it. Every coil has a recommended wattage range printed on it or specified by the manufacturer. Start at the lower end and increase gradually to find your preferred setting.
When you increase wattage beyond the recommended range, the coil temperature rises significantly. This can cause localised dry spots on your wick even when your tank is full.
5. Consider Your E-Liquid Choice
The composition of your e-liquid affects wicking speed. E-liquids are made from a blend of propylene glycol (PG) and vegetable glycerine (VG):
- High-PG liquids (50% PG or more) are thinner and absorb quickly into wicks
- High-VG liquids (70% VG or more) are thicker, produce more vapour, but absorb more slowly
If you frequently experience dry hits with high-VG e-liquids, you may need to extend pauses between puffs, reduce your wattage, or consider a coil designed for thicker liquids with larger wicking ports.
Additionally, heavily sweetened e-liquids can accelerate coil degradation. The sweeteners caramelise on your coil, creating a layer of residue (often called "coil gunk") that impedes e-liquid flow and reduces coil lifespan.
Are Burnt Hits Harmful?
From a health perspective, it's important to understand what happens when vape liquid overheats.
Research published in the journal Addiction by Farsalinos and colleagues (2015) examined aldehyde emissions from e-cigarettes under different conditions. Aldehydes are chemicals produced when e-liquid ingredients undergo thermal decomposition at high temperatures. The study found that aldehyde levels increased dramatically, by 30 to 250 times under dry puff conditions compared to normal vaping.
However, the researchers made an important observation: dry puff conditions produce a strong, aversive taste that vapers instinctively detect and avoid. The study concluded that under normal vaping conditions where users avoid dry puffs, aldehyde emissions remain minimal.
This finding was also noted in the OHID 2022 evidence review, which referenced that e-cigarettes can release aldehydes if e-liquids are overheated, but emphasised that this overheating generates an aversive taste that users detect and avoid.
The practical implication: while inhaling burnt vapour is not advisable, the unpleasant taste serves as a protective mechanism. If you taste a burnt hit, your natural reaction will be to stop and that's exactly what you should do.
Important context: According to the NHS, vaping is considered significantly less harmful than smoking cigarettes and is recommended as a stop-smoking tool for adults. The Royal College of Physicians' 2024 evidence review concluded there is "clear evidence that e-cigarettes cause less harm to health than combustible tobacco." However, if you're not currently a smoker, health authorities advise against taking up vaping.
Will a Burnt Hit Ruin My Coil?
An occasional dry hit that you catch early won't necessarily damage your coil—the metal heating element itself remains intact. However, once you've experienced a full burnt hit where the cotton has actually charred, the coil is effectively finished.
Burnt wicking material cannot be restored. Even if you soak it thoroughly, the singed fibres will continue to produce off-flavours. Some advanced devices (RTAs and RDAs) allow you to replace just the wicking material while keeping the coil, but for most standard tanks with pre-built coil heads, you'll need to replace the entire unit.
Signs your coil needs replacing:
- Persistent burnt or off taste despite a full tank
- Visibly darkened or blackened wicking material
- Significantly reduced vapour production
- Muted or altered e-liquid flavour
Troubleshooting: My Vape Still Tastes Burnt
If you've primed a new coil correctly and still experience burnt taste, work through these possibilities:
- Wait longer – Some coils, particularly those with ceramic wicks or designed for high-VG liquid, may need 20-30 minutes to fully saturate
- Lower your wattage – Start at the bottom of the coil's recommended range and increase gradually
- Check for manufacturing defects – Occasionally, coils can have defective wicking. If a properly primed coil tastes burnt immediately, try a different coil from the same pack
- Ensure airflow is correct – Restricted airflow can cause the coil to run hotter. Check your device's airflow settings
- Verify compatibility – Make sure your e-liquid's VG/PG ratio is suitable for your coil type. Sub-ohm coils generally handle high-VG better than mouth-to-lung coils
Quick Reference: Preventing Burnt Hits
| Problem | Solution |
|---|---|
| New coil tastes burnt immediately | Prime properly; wait 10+ minutes before first puff |
| Burnt taste develops during use | Refill tank; slow down vaping pace; lower wattage |
| Frequent dry hits with high-VG liquid | Wait longer between puffs; use coils with larger wicking ports |
| Coil gunk causing issues | Switch to less sweetened e-liquids; replace coils more frequently |
| Burnt taste won't go away | Replace the coil - burnt wicking cannot be restored |
Summary
A burnt vape taste occurs when your coil heats dry wicking material instead of saturated e-liquid. The solution is straightforward: keep your wick wet. This means priming new coils properly (wait at least 10 minutes), maintaining adequate e-liquid levels, avoiding chain vaping, and using appropriate wattage settings for your coil.
If you do experience a dry hit, stop immediately and allow time for your wick to re-saturate. Once wicking material has actually burnt, the coil needs replacing—there's no way to undo that damage.
With good habits, burnt hits become rare occurrences rather than regular frustrations. Take care of your coils, and they'll deliver the flavour and vapour you expect.