what do you guys recommend I use as a fuel for this setup? Is axe good, I havent tried hairspray, is it any better?

I just went out to the store today and bought all the parts for a spud gun. I am using axe sprayed in the back of the combustion chamber as the fuel. I hooked the bbq spark plug up to two screws in the chamber, and I do see a spark. The combustion chamber does not even ignite. Does anyone know what ...