If you're hearing crackling, popping or hissing noises coming from your vape tank, or it might sound like it's coming from the drip tip/mouthpiece, you may have nothing to be concerned about because these sounds can be quite normal.

The crackles and pops are a result of the liquid being heated and then turned into vapour,

The noises and volume will vary from product to product and how you're vaping for example bigger kits with a bigger coil will be a lot louder than a small kit with a small coil but as long as your vapour and flavour are ok, it's not likely that anything is wrong.

However, just remember, if you're using a sub-Ohm coil, it may be that more liquid is building up than is being vaped resulting in a build up of liquid, for example an excess of liquid which then crackles as it's heated but it doesn't all turn to vapour,you may find if this occurs the liquid is spitting. It may be that the wattage/voltage needs to be increased to provide more heat, or you may just need to vape slightly differently, for example a longer draw at the correct power level to ensure the liquid is all turning to vapour and being vaped away or it could be a case of taking the tank apart and cleaning or the components just to get rid of any excess juice,always make sure you clean your mouth piece as this is often somewhere a lot of liquid can build up and people tend to forget about.

Things that affect these noises include:

- Different e-liquid ingredients, especially the VG and PG as this affects the thickness of the liquid

- Material inside the coil,cotton, or silica

- The design of the coil, some sub-Ohm coils have very large intake holes

- The power level (more or less wattage/voltage) and the resulting heat (temperature)