Have you tried starter fluid? You should get a brief stumble with this. If not and you are definite about your spark then probably you're not getting enough air into the system.

It's also possible that you have a very big vacuum leak. In this scenario, the leak can keep the fuel meter flap from going down thus starving the engine of fuel.

Take your pick and try it out. And please just bump this thread next time so viewers can follow your diagnostics.