When you open the tank you are clearing the vacuum build up - so the taste returns
Tmax's Snake Oil is a clean tasting citrus juice, so you will notice if the coil starts to go dry a little
When the flavor drops off, just open the tank. Not sure about the iStick Basic, but probably invert and unscrew the tank a couple of turns - this will allow a little air in, then screw back up again - you don't need to unscrew it completely.
Or as Baditude says - take a couple of strong primer puffs - Cover the air hole with your finger, and sucking strongly on the driptip and then flutter your finger over the airflow hole - all without firing the mod
The older the coil gets the more you will have to do this
It is caused by a low pressure build up inside the tank, and the cotton being too tightly packed in the stock coils (they do this to prevent leaking). The cotton is there to wick the juice to the coil AND to be a slow leak seal - this seal should allow air back into the tank, but with a build up of carbon around the coil wire, this can prevent the higher air pressure from getting back into the tank.
The primer pulls, forces lower pressure under the coil when you are sucking, so you get good wicking again, and eventually the lower pressure inside the tank can get released.
All tanks work on a pressure difference !!!!!
Sorry if this sounds complicated, but it reads worse than the problem actually is
BTW - Snake Oil by Tmax in the UK is a great great juice - one of the old school standard's !!!!!
. Before I read the replies I almost gave up... also the second bottle of snake oil is on his way. I think I have to put a bit more effort in order to enjoy this juice.
