Here is the quickest way, it works every time and takes just a few minutes AND you can use them again immediately!:
1) After every tank - 3-5 ml
2) Take it apart ( not the coil !)
3) Rinse everything in hottest tap water possible for 2-3 minutes....be sure water is clear running out of the bottom of the coil
4) Put against lips and blow out the coil as hard as you can a few times, turn it around and do the same thing...to dry it
5) Put coil back on stem and screw to mod and dry burn till no smoke
6) Take coil off stem and rerun under tap water as above to remove ash etc.
7) Repeat step 4 assemble and VAPE
The key is not to let it get too built up, I do this every tank and it works like a charm and takes very little time.
The first couple drags will be weak from the water but it wicks it up well in just a few drags and your back in business without all the hassle that some folks go through.
Happy Vaping