Hi karelle62 and welcome!
Well... the first thing i would check is, wether everything is put together correctly, Check if the coil is properly seated in the tank and everything is screwed together nice and snug.
If that doesn't help, the next thing that I would try would be to change the coil.
Oh... and it would also help to know exactly which mod from the Aegis line you have... there's kind of a lot.