The car won't start anymore!

[Travis Goodwin <tgoodwin@xxxx>]

I just got the car back from a guy who had it for 2 months and ended up
working on it exactly 1 hour. From what I can tell he took out the
tamper-proof screw to adjust the CO mixture (using a dwell meter) and worked
on the fuel regulator. 

I drove it home and it was fine. The next day, it started up again and was
fine. Only when I got my destination did the trouble begin.

When I went to start the car I got nothing. The engine turned over and over
with no result. I popped a spark plug wire to check if I was getting spark
and it wasn't. So, I replaced the ignition coil.

Now the car turns over and over and you can hear it almost starting but it
stops just short. It's so very close. I can feel the car wants to start but
something is preventing it. What could that thing be?