An electronic cigarette coil need to be change frequently. Around each 3 weeks depending on the intensity of use. A drop in steam production and less flavor are signs that coil of your electronic cigarette have to be change.
In order to get the most out of your electronic cigarette the choice of your coil is very important. Please choose your electronic cigarette coil according to the power, that must be compatible with your clearomizer, and the power of your electronic cigarette for a perfect vape convenience.
To know the adequate coil you can also look in the specificities of the clearomiseur bought.