Probably a stupid question, but this issue is really bugging me. When you clean it, do you clean out the actual coil it self? Or just the tank?
I normally unscrew the coil and run hot water through the tank and then pop everything back together. It's just really bugging me that every couple of hits taste reallly burnt and these things are shot in a day of 3.0 volts.
Not a stupid question!
Clean the actual coil. I run hot water through the coil (I'm talking about stock protank II coils with silica wick), blow through the bottom of the coil a few times, run more hot water through it, blow out again. Then I might take off the chimney, remove the flavor wicks and look inside at the actual metal coil. If it looks black and gunked up, I'll dry burn it with a few short pulses, until the coil glows evenly and it looks cleaner. Then I rinse again to get the ash off from the dry burn. Then dry the coil, reassemble and attach to the tank.
If you use a cotton wick, take out the cotton before dry burning.
My coils also get bad after a day and a half of vaping on one tank, so I'll usually rinse them out once a day or dry burn if needed. They last longer this way. But still the protank coils only last me about a week.