How to Prevent Spitback and Flooding in Your Vape

If you've ever experienced hot e-liquid popping into your mouth or a gurgling sound when you inhale, you've likely dealt with spitback or flooding. These are common vape issues — especially for beginners — but they're easy to fix once you understand the cause.

In this UK vaping guide, we'll explain what causes spitback and flooding, how to prevent it, and how to keep your device running smoothly.

What Is Spitback?

Spitback happens when small droplets of hot e-liquid pop up through the mouthpiece while you inhale. It can feel unpleasant and may slightly burn your lips or tongue.

Common signs include:

• Popping or crackling sounds
• Hot droplets in the mouth
• Excess condensation in the drip tip

What Is Flooding?

Flooding occurs when too much e-liquid saturates the coil chamber. Instead of vaporising properly, the liquid pools around the coil.

Signs of flooding:

• Gurgling sound when inhaling
• Weak vapour production
• Leaking from airflow holes
• E-liquid in the mouthpiece

What Causes Spitback and Flooding?

1. Overfilling the Tank or Pod

Filling beyond the max line can force liquid into the coil chamber.

2. Incorrect E-Liquid Thickness

Using high VG liquid in a pod kit designed for 50/50 blends can cause improper wicking.

For pod systems, stick to 50/50 nicotine salt e-liquids for best performance.

3. Priming Too Much

Adding too much liquid directly into the coil when priming can oversaturate the cotton.

4. Low Wattage Settings

If wattage is too low, the coil won't fully vaporise the liquid, leaving excess behind.

5. Drawing Too Hard

Pulling too aggressively can drag excess liquid into the coil chamber.

How to Prevent Spitback

• Don't over-prime your coil (a few drops is enough)
• Increase wattage slightly (within coil's recommended range)
• Use the correct VG/PG ratio for your device
• Take slow, steady puffs instead of sharp inhales
• Clean your mouthpiece regularly

If your device has adjustable airflow, slightly opening it can also reduce excess liquid buildup.

How to Fix a Flooded Coil

If your coil is already flooded:

• Remove the pod or tank
• Gently blow through the mouthpiece into a tissue
• Wipe excess liquid from the base
• Check that all seals are tight

If flooding continues, replacing the coil may be necessary.

Browse compatible UK vape kits and replacement coils to keep your setup fresh.

Choose the Right E-Liquid for Your Device

One of the biggest causes of flooding in the UK is using the wrong liquid type.

For Pod Kits & MTL Devices:

• Use 50/50 VG/PG blends
• Nicotine salts are ideal

Popular UK nic salt brands include:

All nic salts qualify for our Buy 7 Get 3 Free offer.

For Sub-Ohm Devices:

• Use 70/30 high VG liquids
• Ensure wattage is set correctly

Check Your Coil and Seals

Loose coils or damaged O-rings can allow excess liquid into the airflow chamber. Make sure:

• Your coil is screwed in securely
• All rubber seals are intact
• The tank is assembled properly

Storage Tips to Prevent Flooding

• Store your device upright
• Avoid leaving it in hot environments
• Don't leave tanks empty for long periods

Heat can thin e-liquid and increase leakage risk.

When to Replace the Coil

If you notice:

• Persistent gurgling
• Burnt taste after fixing flooding
• Weak vapour even at correct wattage

It's likely time to install a fresh coil.