chain vape??

hmmm...i got no problem chain vape using 0.5 coil
maybe your using high juice VG
but i got no problem using cloudchaser sirap bandung which claim 70/30 vg/pg
maybe we wait for other user to comment

how long you take a puff each time? what kind of occ is that? kanthal? nickel?

Most likely you didn't prime your occ properly before usage. If its already burnt in the first place, then all the way will taste like that. Best thing is to replace it.

Or, your using a bad juice with high coloring/sweetner which spoils it very fast.

since other members mentioned that the OCC is Stainless Steel (SS), did u set your mod to temperature control for it? what mod u using?
if u vape a lot better rebuild ur own coils.

Coffee and tobacco flavors clog wicks very fast, even when without a drop of sweetener.

The best thing I can suggest is to take a sewing needle and poke 2 holes in the wick at the juice holes of the OCC, then poke 4 holes thru the cotton vertically around the coil. It will extend the life of your OCC...but not by much.

Get an RBA for your Crown...it's less than RM25 including shipping at Shopee before applying coupon, if I recall correctly. Kanthal (if u use that stuff) is at super low price today too. Check it out!