Why Is My Vape Spitting or Crackling? Causes and Safe Fixes
TL;DR: A quiet crackle can be normal as e-liquid heats on the coil, but hot liquid reaching your mouth is usually spitback or flooding. Common causes include too much liquid around the coil, overfilling, condensation, an incorrectly fitted pod or an inhale that does not suit the device. Wipe the mouthpiece, keep the device upright and stop using it if the problem continues.
By VapeKitUK Editorial Team
Crackling or spitting: what is the difference?
A soft, brief crackle is often just the sound of liquid being heated. It is not automatically a fault. Spitting, sometimes called spitback, is different: droplets of hot e-liquid reach the mouthpiece or your lips, or the device gurgles and produces less vapour than usual.
| What you notice | What it may indicate |
|---|---|
| Quiet crackle with normal vapour | Liquid is heating normally. |
| Loud popping with liquid in the mouth | Flooded coil, excess liquid or condensation. |
| Gurgling and weak vapour | Too much liquid in the airflow path or a pod that is not seated correctly. |
| Harsh burnt taste | Dry coil, worn pod or power setting that does not suit the coil. |
Why does a vape spit?
The coil is flooded
Flooding happens when more liquid reaches the coil than it can vaporise cleanly. It can occur after overfilling a tank, adding liquid to the central airflow tube or taking repeated draws while the device is not being used in its normal position.
Condensation has collected in the mouthpiece
Small amounts of condensation can build up around a mouthpiece. Remove the mouthpiece only if the device is designed for it, then wipe the accessible area with tissue. Do not push tissue, cotton buds or metal objects deep into the device.
The pod or coil is not fitted correctly
A loose pod, worn seal or poorly seated coil can allow liquid into the airflow path. Turn the device off, remove the pod only if it is user-removable and check the seals. Do not force anything into place.
Your draw does not suit the device
A small mouth-to-lung pod is designed for a slower, gentler draw. Pulling very hard can draw excess liquid towards the coil. Use the inhalation style described in the product instructions.
What can you safely try?
- Stop drawing if hot liquid reaches your mouth and spit it out.
- Wipe the mouthpiece and outside of the pod.
- Keep the device upright for a few minutes.
- Check that the pod or coil is seated correctly.
- Make sure the tank is not filled above its marked limit.
- Use the recommended wattage if you are using a variable-power device.
- Replace the compatible pod or coil if the problem continues.
Do not blow hard into a sealed pre-filled device, shake it, heat it or pierce it. If e-liquid gets into your mouth, spit it out and rinse your mouth. If you feel unwell after swallowing nicotine liquid, seek urgent medical advice.
Why does a vape crackle after filling?
A little extra liquid can remain around the coil immediately after filling. Keep the device upright, allow the coil time to absorb evenly and take a gentle test draw. If the popping is loud or liquid continues to reach your mouth, stop and check the pod rather than repeatedly trying to clear it.
When should you replace the pod or coil?
Replace a pod or coil when the flavour is persistently burnt, vapour is weak, the liquid is darkening quickly, the device leaks repeatedly or troubleshooting does not help. Use only the compatible replacement specified for the device.
Our guide to signs of a worn coil explains the difference between normal flavour change and a component that needs replacing. Adults using a pre-filled format can compare compatible options in the pre-filled pod kit collection.
Frequently asked questions
Is vape crackling normal?
A quiet crackle while liquid heats can be normal. Crackling accompanied by hot liquid, loud popping, leaking or weak vapour needs checking.
Why does my vape spit liquid into my mouth?
It is commonly linked to flooding, condensation, overfilling, a loose pod or an inhale that is too forceful for the device.
Can I keep using a vape that spits?
Stop using it until you have checked the mouthpiece, pod or coil. If hot liquid continues to reach your mouth, replace the compatible component or contact the retailer.
Does changing e-liquid stop spitback?
It may help if the liquid is not suited to the device, but check the coil, fill level, seals and draw technique first.
Should I open a sealed pre-filled vape?
No. Do not pierce or dismantle a sealed device. Follow the retailer’s support and recycling instructions.
Further reading
Reviewed by the VapeKitUK Editorial Team. General troubleshooting information only.
