Why Is My Coil Getting Burnt? The Complete Guide to Coil Care

If you’ve been vaping for any length of time, you’ve probably experienced that dreaded burnt taste. It hits you out of nowhere, a metallic, unpleasant flavour that can reach as far as your lungs and make you cough or even feel nauseous. What went wrong? In most cases, the culprit is a burnt coil.

Note: Nicotine is addictive. Vaping products are intended for adult smokers seeking an alternative to cigarettes. If you’re new to vaping, visit a reputable retailer for guidance on device selection and proper use.

This guide covers everything you need to know about burnt coils and coil gunk: what causes them, how to recognise the warning signs, and most importantly, how to prevent them from ruining your vaping experience and costing you money.

Understanding How Your Coil Works

Before diving into problems and solutions, it helps to understand the basic mechanics. Inside your atomiser coil is a wick, a piece of absorbent material (usually cotton) that soaks up e-liquid from your tank and conducts it to the heating element. When you press the fire button, the coil heats up and vaporises the e-liquid held in the wick.

Good vaping happens when there’s a proper balance: the wick stays saturated with juice while the coil heats and vaporises it. Problems occur when this balance is disrupted. Either the wick dries out, or residue builds up, preventing proper absorption.

How Long Should a Coil Last?

All coils eventually wear out, but the lifespan varies considerably between vapers. Some people swap coils every week, while others can stretch a month between changes. As a general rule, expect your coil to last between two and three weeks with normal use. This varies by device, e-liquid choice, and vaping habits.

Once a coil is truly burnt, there’s no saving it. The strong taste won’t go away, and your only option is to replace it. That’s why prevention is so valuable.

Why Your Coil Burns – The Major Causes

Based on experience with thousands of vapers, the vast majority of coil burnouts can be traced to two primary culprits: chain vaping and failing to prime new coils. However, several other factors can accelerate coil failure.

Chain Vaping

Chain vaping means taking puff after puff with barely any breaks in between. It’s probably the most common cause of burnt coils, particularly among newer vapers. Even experienced vapers can fall into this trap when they have a particularly delicious juice in the tank.

Why it causes problems: Your wick needs time to re-saturate with e-liquid between puffs. When you chain vape, you’re vaporising juice faster than the wick can absorb replacement liquid. Eventually, you’re heating a partially dry wick, which causes it to burn and char.

Not Priming Your Coil

Have you ever installed a fresh coil only to get burnt hits immediately? You’re not alone. Nearly every vaper has made this mistake at least once. While some blame a faulty coil, the real cause is usually that the coil wasn’t properly primed before use.

What priming means: Priming is the process of preparing your new coil by manually saturating the wick with e-liquid before you fire it. If you skip this step and heat a dry wick, it can burn instantly. This permanently damages the coil, giving you that nasty burnt taste from the very first puff.

High Power Vaping

Running your device at wattage or voltage levels above the coil’s recommended range puts tremendous stress on the wick. Higher power vaporises e-liquid much faster, and if your wick can’t keep up with the demand, it dries out and burns.

This is especially problematic when combined with chain vaping or long draws. If you enjoy high-power vaping, consider upgrading to a tank system designed for it. Look for one with larger wick ports and better juice flow, or consider a rebuildable atomiser with a built-in drip tip for direct dripping.

Running Your Tank Too Low

Are you the type who squeezes every last drop out of your tank before refilling? This habit can damage your coils over time. When your tank is empty or nearly empty, there may not be enough liquid to reach the coil’s input holes, leaving your wick dry.

Best practice: Keep your tank filled so the e-liquid covers the coil’s side input holes. If you can’t easily see your juice level, try not to let it drop below about a quarter full. Want to switch flavours before your tank is empty? Simply pour the remaining juice back into its bottle, then add your new liquid.

Your E-Liquid Choice

Not all e-liquids are created equal when it comes to coil longevity. Two characteristics in particular can cause problems.

High VG Content: Vegetable glycerin (VG) has a thicker consistency than propylene glycol (PG). While high-VG juices produce impressive clouds, they’re harder for wicks to absorb efficiently. The thick liquid may not flow fast enough into the wick, leaving parts of it dry during use. Consider sticking with VG ratios of 70% or below, or upgrade to a tank with a better wicking system if you love max-VG liquids.

Sweetened E-Liquids: Sugary e-liquids taste amazing, but can shorten coil life significantly. When heated, the sweeteners don’t fully vaporise. Instead, they caramelise and crystallise on the coil, blocking juice absorption. Unfortunately, some of the most delicious flavour profiles (desserts, candies, some fruits) tend to have the most sweetener.

Understanding Coil Gunk

While a burnt coil is the dramatic, sudden end of your coil’s life, coil gunk is the slow killer that shortens coil lifespan over time. Understanding gunk helps you take preventative action.

What is Coil Gunk?

Coil gunk is a black, sticky, tar-like substance that accumulates on your coil over time. It’s composed primarily of unvaporised e-juice residue combined with other factors. You can easily spot it by inspecting your coil. It appears as a dark buildup coating the coil wire and clogging the wick material.

As gunk builds up, it acts as a barrier between the e-liquid and the heating element. You’ll notice changes in flavour quality first. Your juice may taste muted, off, or develop an unpleasant undertone. Eventually, the coil won’t heat the e-liquid properly, and you’ll get dry hits even with a full tank.

What Causes Gunk to Build Up?

The three main gunk accelerators are:

Sweetened E-Liquids: As mentioned in the coil-burning section above, sweeteners crystallise when heated and leave a residue with every puff. Dark-coloured e-liquids are often a warning sign, as the colour can indicate added sweeteners. Coffee flavours, pastries, desserts, and candies are particularly notorious for gunking up coils.

High VG E-Liquids: The thick consistency of VG means some of it remains behind after each hit rather than fully vaporising. Over time, this residue accumulates. “Max VG” typically refers to about 70% VG, though some liquids can reach 100%.

Intense Vaping Practices: High power settings, chain vaping, and long draws force your coil to work harder. When juice vaporises faster than it can wick, you get incomplete vaporisation and residue buildup.

How to Prevent Burnt Coils and Gunk

Now that you understand what causes problems, here’s how to maximise your coil lifespan.

Always Prime New Coils

Before using a new coil, drip e-liquid directly onto the exposed cotton of the wick until it appears saturated. Install the coil, fill your tank, and let it sit for 5-10 minutes before your first puff. This gives the wick time to fully absorb liquid and prevents burning on that crucial first hit.

Pace Your Puffs

Give your wick time to re-saturate between hits. Even just a few seconds helps. If you find yourself chain vaping to satisfy nicotine cravings, consider trying a higher nicotine strength so you need fewer puffs to feel satisfied. Majestic Vapes carries a range of nicotine salt e-liquids that deliver satisfaction with less frequent puffing, which can help extend coil life.

Caution: Increase nicotine strength gradually and be aware of how your body responds. Higher nicotine levels may cause dizziness or nausea if you’re not accustomed to them.

Take Shorter, Sharper Draws

Long, continuous draws stress your wick because they vaporise more liquid before it can be replaced. Try shorter, quicker puffs instead. You might find it more satisfying than marathon draws.

Stay Within Power Recommendations

Check the wattage range printed on your coil and stay within it. If you enjoy higher power vaping, invest in hardware designed for it rather than pushing standard coils beyond their limits.

Keep Your Tank Topped Up

Make it a habit to refill your tank before it gets below the quarter mark. Maintaining proper liquid levels ensures your wick always has access to juice.

Choose Coil-Friendly E-Liquids

Consider these adjustments to your juice selection:

• Opt for VG ratios of 70% or below, or choose 60/40 VG/PG if available
• Choose clear or light-coloured e-liquids when possible, as dark colours often indicate sweeteners
• Try different flavour profiles, since fruity and menthol varieties tend to be gentler on coils
• Be especially cautious with coffee, pastry, and dessert flavours

Quick Reference – Causes and Solutions

Get the Right Coils for Your Setup

At Majestic Vapes, we carry a wide selection of replacement coils for all major devices, along with coil-friendly e-liquids that help maximise your coil lifespan. Whether you’re looking for starter kits designed for longevity, sub-ohm tanks with superior wicking systems, or nicotine salts that won’t shorten your coil life, our team can help you find what works for your setup.

Visit our stores in Brampton and Mississauga, or browse our online selection. Have questions about coil care or need help troubleshooting? Contact us.

Reminder: Vaping products contain nicotine, which is addictive. These products are intended for adult use only. Coil lifespan varies based on individual usage patterns, device type, and e-liquid choice.