Do you own a multimeter, by any chance? The best way to check if your atty is OK is to measure its resistance. I do it all the time with all my atties, just to be sure.
If you don't own a multimeter, please check if your connections (threads and center posts on your battery, the base of the eVod) are clean and free of any caramelized, burnt juice. If they are dirty, clean them carefully using a Q-tip or an old, soft toothbrush dipped in 91% ISO alcohol. Screw your eVod into the battery and see if it fire, but do not overtighten--overtightening can dislocate the center pin and lead to malfunction--it has to just make contact, no more.
If that doesn't help, it's time to, possibly, adjust the center pin.
Wiggle the center post in the eVod base and in the battery to raise it a bit.
The litle flat circle is your center post. Use a pair of tweezers, paper clip, or safety pin, or what have you. Wiggle it a little, from all sides, and raise it up
a hair. Just a hair--do it very, very gingerly. If you pull on it too hard, you may sever the wires inside and kill your battery.
If that doesn't work--get a replacement coil (I like the 2.2Ω ones).
And if you do have a multimeter, check the old coil.