Looks like a dual-coil... so the tank would be a protank3. 9W is not a huge amount for the coil, and most juices will be happy with that. If you're sucking juice like through a straw, the coil is shot/dead/kaput. Toss it and try another one. But, before you do that... dump your juice, take the tank apart and clean it, inspecting the o-rings while you have it apart. Reassemble "snug", not over-tightened, pop in a fresh coil, refill, allow juice to soak into the coil for 5-min or more, then vape again, perhaps at 8W to start out... see how that works out for you...