Electronic cigarette (e-cigarette) leaking is a common issue faced by some users, and it may occur due to various reasons. Here are some potential causes and preventative measures:

1. Sealing Issues: Ensure that all components of the e-cigarette device are correctly assembled and tightly sealed. Poor connections or damaged seals can lead to liquid leakage.
2. Maintenance Problems: Regularly clean and maintain the e-cigarette device. Residues accumulating in the atomizer coil or other components can contribute to leaks.
3. Temperature Concerns: Extreme temperatures can affect the viscosity of e-cigarette liquid, leading to leakage. Be cautious when using e-cigarettes in very cold or hot environments.
4. Overfilling: Adhere to the manufacturer’s recommendations and avoid overfilling the e-cigarette liquid. Excessive liquid may prevent the atomizer coil from functioning correctly, resulting in leaks.
5. Use of Low-Quality E-liquids: Opt for reliable and high-quality e-liquid brands. Poor-quality e-liquids may contain undesirable ingredients or have incorrect viscosity, increasing the risk of leaks.

To prevent e-cigarette leaking, consider the following measures:

1. Follow User Manual: Adhere to the manufacturer’s instructions for assembling and using the e-cigarette device correctly.
2. Regular Maintenance: Periodically clean and maintain the e-cigarette device, including cleaning the atomizer coil and other critical components.
3. Avoid Overfilling: Strictly follow the recommended e-liquid capacity provided by the manufacturer and avoid overfilling.
4. Choose High-Quality E-liquids: Select reputable e-liquid brands to ensure product quality and the reliability of ingredients.
5. Adapt to Environmental Temperature: Exercise caution when using e-cigarettes in extreme temperature conditions, and try to prevent the device from being exposed to excessive heat or cold.

Note: If leakage issues persist during e-cigarette use, it is advisable to discontinue use immediately, inspect the device, and seek assistance from the manufacturer or professionals if necessary.