Why Is My Vape Spitting?
A clear UK guide to vape spitting (also called spitback), the causes of hot e-liquid reaching your mouth and the practical fixes.
Spitting (or spitback) is hot e-liquid getting through the airflow into your mouth.
Causes include flooded coils, low wattage, certain coil types, and worn coil seals that let liquid splash through the airflow path. Most UK vapers experience some spitting at some point. Fixes are usually simple. Persistent spitting often means the coil needs replacing.
Spitting is one of the more unpleasant vape problems. Hot e-liquid touching your tongue at high temperature is uncomfortable and sometimes painful. Knowing why it happens helps you stop it quickly. Most spitting comes from simple causes that you can fix in minutes.
Five common causes of vape spitting
These five cover almost every spitting situation. The grid below explains each.
Flooded coil chamber
Excess e-liquid in the coil chamber gets propelled through the airflow when fired.
⚠ Most commonLow wattage
Insufficient power lets liquid pool rather than vaporise. The pool gets blasted up.
⚠ SettingsMesh coil design
Some mesh coils are more prone to spitting than traditional wire coils.
⚠ Coil typeWorn coil seal
Damaged seal lets liquid bypass the wicking system and splash through airflow.
⚠ Replace coilVertical coil orientation
Coils oriented vertically in the airflow path send liquid more directly to your mouth.
⚠ Design quirkHow to fix spitting step by step
The table below covers what UK vape shop staff most often recommend.
| Quick fix | How to do it |
|---|---|
| Take 5 dry puffs | Inhale without firing to clear excess liquid from coil chamber |
| Fire briefly into a tissue | 1 second pulse blows out excess liquid |
| Increase wattage slightly | Within coil rating, helps vaporise pooled liquid faster |
| Tighten the coil if loose | Loose coils let liquid bypass the wicking |
| Reseat the coil | Unscrew, dry threads, reinstall and prime properly |
| Replace the coil if persistent | Worn seals usually mean replacement is needed |
Why mesh coils sometimes spit more
Modern mesh coils have generally improved vaping but some designs are more prone to spitting than older wire designs. The mesh sheet has more surface area which sometimes lets pockets of liquid pool. Faster vaporisation also creates more rapid pressure changes that can splash liquid up. Most UK mesh coils work fine but some specific models are known for spitting tendencies. Reading recent UK reviews helps avoid known problem coils.
Hot e-liquid spitting can be painful when it touches your tongue. The temperature is similar to hot coffee. Most spits cool quickly but a few drops can leave a temporary mark or burning sensation. Repeatedly experiencing spitting suggests something is wrong rather than normal device behaviour. Most modern UK vape devices should not spit during normal use.
How to prevent future spitting
The checklist below covers what UK vape shop staff most often recommend.
Spitting prevention checklist
Use four or more of these to stop spitting before it starts.
- Avoid overfilling the tank past the maximum line
- Take a few dry puffs after refilling before firing
- Stay within the coil's recommended wattage range
- Avoid storing the device upside down
- Replace coils when seals show wear
- Use 70/30 VG/PG e-liquid in sub ohm tanks for less splashing
When spitting means a bigger problem
Persistent spitting that does not respond to the simple fixes usually means coil seal failure. Replace the coil and most spitting stops. If spitting continues with new coils, the tank itself may have worn threads or seals letting liquid bypass the wicking system. UK retailers can replace tanks or devices under warranty if the issue is hardware related. Some specific coil designs are known for spitting and switching to a different coil model often resolves recurring issues.
Spitting connects to other tank issues, which our our guide on why is my vape bubbling covers, plus our article on why is my vape leaking explains the airflow settings that affect spitting tendency.
Frequently asked questions
What is vape spitback?
Hot e-liquid getting through the airflow into your mouth when you fire the device.
Is vape spitting dangerous?
Hot e-liquid is painful but not normally dangerous. Persistent spitting suggests a coil problem.
Will a new coil stop spitting?
Usually yes if the cause is worn seal. Try a fresh coil before more drastic fixes.
Why does my mesh coil spit more?
Some mesh designs are more prone. Try a different coil model from the same brand.
Can low wattage cause spitting?
Yes. Below the coil's rated minimum, e-liquid pools rather than vaporises and splashes up.
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