Help & Guidance — Purple Haze MK
Why Does My Vape Taste Burnt With a New Coil?
A new coil tastes burnt for one reason in almost every case: the dry cotton wick was not adequately primed with e-liquid before first use. The coil fires, heats cotton that has not yet absorbed liquid and scorches it instantly — a mistake that can ruin a new coil in the first puff and whose burned flavour persists even after the wick eventually saturates.
A new coil contains completely dry cotton wick material — no e-liquid whatsoever. Before you fit a new coil and start vaping, that cotton must be fully saturated with e-liquid through a process called priming. If you skip priming — or rush it — and take your first puff before the cotton is wet throughout, the coil heats dry fibres. Cotton scorches almost instantly, producing the harsh, acrid burnt flavour. The critical and frustrating part: once cotton has burned, the flavour compounds from the scorched fibres are embedded and do not wash out when liquid eventually soaks through. A poorly primed coil will continue to taste slightly or strongly burnt for its entire life, even after the wick has fully saturated. Priming properly from the start is the only way to avoid this.
How to Prime a New Coil: The Complete Method
Locate the wicking ports on the new coil
Before installing the coil, identify the wicking ports — these are the small rectangular or circular holes around the side of the coil head where you can see exposed white cotton material. These are the entry points through which e-liquid reaches the cotton wick inside. On most replacement coils for pod kits there are two to four of these ports visible around the barrel.
Add 3 to 5 drops directly to each wicking port
Using the dropper from your e-liquid bottle or a blunt-tipped syringe, place 3 to 5 drops of your e-liquid directly onto each visible cotton area. Do not flood the coil — you want to pre-saturate the specific areas that experience initial heat exposure. The cotton should visibly darken and absorb the drops within a few seconds. Also add a single drop directly down through the top opening of the coil if the mouthpiece end is exposed.
Install the coil and fill the tank or pod
Screw or press the coil into the tank or pod, fill with your chosen e-liquid and cap or seal properly. Ensure the e-liquid completely covers the wicking ports — the liquid level in the tank must be above the holes through which the cotton absorbs liquid.
Wait a minimum of 10 to 15 minutes
This is the step most vapers skip — and the most important one. Set the filled device aside for 10 to 15 minutes and do nothing. Liquid absorbs into the dense cotton wick through capillary action, saturating from the outer edges inward. High-VG liquids are thicker and need closer to 15 to 20 minutes. 50/50 liquids need 10 minutes minimum. Rushing this step is the primary cause of new-coil burnt taste.
Take 3 to 5 cold primer puffs
Without activating the device — no button press, no LED — take slow, gentle draws through the mouthpiece. These cold draws create suction that mechanically pulls liquid deeper into the cotton wick, supplementing the passive capillary saturation. Three to five gentle draws is sufficient. Do not attempt to generate vapour at this stage.
Start at the lowest recommended wattage
For your first three to five puffs on the new coil, set the device to the lowest end of the coil's rated wattage range. Lower wattage generates less heat, giving the cotton wick more time to stay ahead of liquid demand before it can heat faster than the wick re-saturates. Over the first few sessions gradually increase wattage to your preferred level. Sub-ohm vapers should take particular care with this step as high wattage magnifies any priming shortfall.
The Most Common Priming Mistakes
Skipping the wait time entirely
Fitting the coil, filling the tank and immediately vaping is the most common mistake. Even with drops applied to the wick, the inner cotton core is still dry without the 10 to 15 minute soak. The first puffs vaporise from outer cotton only while the core heats dry.
Instead: always set a 10-minute timer after filling. If you are in a hurry, even 5 minutes is better than zero — but 10 to 15 is the correct minimum.Not applying drops to the cotton directly
Filling the tank and letting it soak without applying drops first relies entirely on passive capillary action from the outside in. This takes longer and is less reliable than manually pre-saturating the cotton at the most critical heat-exposed points.
Instead: always add drops directly to each visible wicking port before filling the tank. Manual pre-saturation is the most effective insurance against first-puff burning.Vaping at full wattage immediately
Even a properly primed coil benefits from a break-in period at lower wattage. Firing a new coil at full power from the first puff stresses the cotton and generates more heat than the liquid can handle in the first moments of use.
Instead: start at the lower end of the coil's wattage range and increase gradually over your first two to three sessions. This extends the coil's life and improves initial flavour significantly.Using thick high-VG liquid and not waiting long enough
High-VG e-liquids (70% VG and above) are significantly more viscous than 50/50 liquids. They wick more slowly through cotton and require a longer priming period — 15 to 20 minutes rather than 10. Under-priming is more likely and more damaging with thick liquids.
Instead: for high-VG liquids extend the priming wait to 15 to 20 minutes. Add extra drops to the wicking ports and take more cold primer draws before the first powered puff.The minimum wait time after filling a primed coil before first use — this single step prevents nearly all new-coil burnt taste and is the step most often skipped
Once cotton has scorched, the burnt flavour embeds in the fibres permanently — adding more liquid will not fix a burned new coil, and it will need replacing
If priming was done correctly and the coil still tastes slightly off, the wrong VG/PG ratio, wattage too high or a post-charge voltage surge may be secondary causes
When Priming Is Not the Problem
If you followed the full priming process correctly — drops on the cotton, 15 minutes wait, cold primer draws, low starting wattage — and the coil still tastes slightly burnt or off, consider these secondary causes:
Wrong e-liquid VG/PG ratio for the device
High-VG liquid in a narrow-wicking pod or MTL device cannot saturate the wick quickly enough, causing wick starvation even with a freshly primed coil. Match your liquid to your device: 50/50 or nic salts for MTL pod kits; high-VG shortfills for sub-ohm tanks. If you just switched to a thicker liquid and the new coil is burning, the VG ratio is likely the issue.
Wattage still too high
Starting above the coil's rated wattage even with a primed coil will degrade the cotton rapidly. Check the wattage range stamped on the side of the coil head — on most replacement coils this is printed in a format like "25 to 35W." If your device is set above this range, reduce it. If the device has no wattage control, ensure you are using the coil specified for that device.
Post-charge voltage surge
Some devices deliver a brief power surge in the first moments after charging completes. If you replaced your coil immediately after fully charging and the burnt taste appeared on the very first puff, this surge may have scorched the cotton before it could stabilise. Take one or two very gentle short puffs immediately after charging to dissipate the surge before your first proper draw.
Defective coil (rare)
In a small minority of cases, a new coil is genuinely defective — poorly wound mesh, inadequate cotton fill or a manufacturing fault. If you completed the full priming process correctly, used the right e-liquid and started at correct wattage, and the coil still tastes badly burnt from the first puff, a defective coil is possible. Replace with another new coil and repeat the priming process.
The 10 to 15 minute priming wait is the single most undervalued step in vaping maintenance — and the one most likely to save you money. A coil burned in its first puff due to rushed priming typically needs replacing before it has delivered one good session. At £3 to £6 per coil, spending 15 minutes priming properly is far better than spending another £3 to £6 on a replacement two days later. Build priming into your routine every time you change a coil and the new-coil burnt taste problem disappears permanently.
Part of Our Guide
Help & Guidance Centre
This article is part of the Purple Haze MK Help and Guidance Centre. For more vaping guidance, visit the Purple Haze MK Help and Guidance Centre.
Frequently Asked Questions
Can I save a coil that tastes burnt from first use?
If the cotton was burned on the very first puff, unfortunately the coil is likely already compromised. The burnt flavour compounds embed in the cotton fibres and do not wash out as the wick saturates with liquid. You can try leaving the filled device for 30 minutes and vaping a few puffs to see if the taste improves — occasionally a very brief dry hit before the cotton fully saturated is recoverable. If the burnt taste persists after five to ten puffs on a fully saturated wick, the coil needs replacing.
My new coil was fine at first then started burning — is this still a priming issue?
If a new coil tasted good for the first day or two then developed a burnt taste, priming is unlikely to be the cause — the cotton was clearly saturated at first use. The more likely causes are: the e-liquid level has dropped below the wicking ports (refill more frequently), chain vaping in a heavy session has starved the wick of liquid, or the coil has reached end of life faster than expected due to a sweet e-liquid caramelising on the mesh. Check the liquid level first, then consider whether you have been vaping heavily with a sweet or dessert flavour.
Do pre-filled pod systems need priming?
Most pre-filled pod systems come with the cotton already pre-wetted with e-liquid at the factory, as they are sealed units. However, letting a new pre-filled pod sit in the device for 5 to 10 minutes before the first draw — giving the cotton time to fully equilibrate — is always worthwhile. If a new pre-filled pod tastes burnt on first use, a trapped air bubble (rather than a dry wick) is more likely the cause — try gently tapping the base of the device on your palm and standing it upright for 10 minutes before trying again.
Related Articles
For more vaping guidance, visit the Purple Haze MK Help and Guidance Centre.
Replacement Coils in Milton Keynes
Purple Haze MK — Coils and Vaping Accessories
For replacement coils, e-liquids and hands-on vaping advice in Milton Keynes, visit us at Stall 109, Milton Keynes Market. Tue, Thu to Sat 9am to 5:30pm. Sun 10am to 5pm.