Three reasons why your cartridge is leaking:
1.) The tank is not properly sealed. If it is properly sealed, it results in a pressurized chamber that helps keep the oil inside, as well as pusing it up to the wick. If the pressure is low, the oil can seep through continuously, causing the atomizer to flood, thus resulting in leaks.
2.) The ceramic’s ability to hold oil is weak. Ceramic wicks due to proper pressure inside the tank. It will continue to hold oil until it is fully saturated, whereupon the pressure inside will keep the oil from further flooding the chamber. However, if the ceramic’s ability to hold oil has been compromised, whether by age or improper pressure, the balance will be skewed, resulting in a continuous flow of oil, causing leaks.
3.) Improper setup. An atomizer’s efficiency depends on its parts, the cotton wick, ceramic, and intake hole. If the parts work properly, the wick saturates well, and the air intake hole is not blocked, everything should work accordingly. However, if the wick is too small or too large, if the coil is wrapped too tight or too loose, or if the intake hole is blocked, this results in an inefficient atomizer, thus causing leaks in the long run.