How you mean breaking the coil? I does it say on side of a coil wattage?
Making sure your coil is well saturated with juice, even juicing the holes on the sides and down the top before inserting it into your tank and filling it up.
Then, you let it sit for a good while, maybe 10 minutes.
After that, start off with a super low power, like 10 watts and gradually increase it to where you think it should be. Have your air flow open as wide as possible to start, then you can start closing it down and upping the watts until it begins to feel right.