CHECK THE AIR GAP as suggested above.
On mopar Electronic Ignition it is set at .004, the above poster recommends .008. VERY IMPORTANT USE A BRASS FEELER GAUGE, a steel feeler gauge will be attracted to the magnet and make it SEEM like the gap is correct when it is not.
If the gap is not correct the car will not start or run. If it does start it will stay running but as the motor heats up and the distributor gets warm the air gap will open, so when you stop the car it will not start.
Finally, make sure your battery is in excellent shape. If you don't spin the motor sufficiently fast enough you won't get the hall effect device to trip, thus no spark.
Hope this helps,
Regards,
Joe Dokes
