Is this the cause of my problems?

I had a failed vacuum modulator that was allowing transmission fluid to be drawn into the bottom plentum of my intake manifold. With the manifold off, I had discovered that one of the o-rings of the eight seals for the top and bottom to join the two intakes together was bad and failed. This is the cylinder that I could not get to fire. Has anyone else experienced this problem? (When we bought the car, it was not running. )