Oversaturated wicks, or not enough power can cause popping and spitting too.
so from the looks of how i wicked above does it look oversaturated? because as of now if im vaping at higher watts (30-50 ) it pops even more, funny thing is that it pops when i first fire it, after that it doesnt.
at 55 i hear alot of gurgling noise which im assuming its too hot..
at 30 i get a loud pop and then it doesnt do it anymore.. but if i stop for awhile and fire again it happens again