Cylinder has spark but not firing..

i've been reading this post for a few days.....if u think it is a manifold problem i would think that a vacuum test w/a gauge would be in order.

should be a wealth of information with that gauge, and they are not expensive.

like rob said earlier, one step at a time.......sometimes on a thread like this u will get alot of info, good stuff, but sometimes too much.

good luck dude, i'm sure you'll figure it out.
higgs