Step1 -pull a plug, hook plug wire to it, prop it where the threads are grounded. Have someone try to start it while you watch the plug to see if it has a good regular blue spark. If you do- check your firing order--easiest way i know to static time it is to line up timing marks on pulley and pointer--make sure that the rotor is pointing at the #1 plug postion of the dist. cap. now make sure that you have the pointer at the * of timing you want(i like around 8-10) adjust your points plate where they are just starting to OPEN. Remember your firing order Clockwise too young-too old-just right 15-36-24 (all inline 6's)an I6 should fire right up and run fine if you do this.
If you don't have a good spark, make sure you have the feed to the points insulated--didn't leave out a little plastic or fiber washer. Make sure that you feed the points from the - side of the coil. make sure the condenser at the points is properly attached and and that the points gap is good, i set every set of points at .016-.017 not sure if that is what is called for by ford but it will run darn near anything. If all this is correct replace the condensor -cheap and they always fail at the oddest times. A cracked post insulator at the ponts or a missing plastic washer can be a completely baffling thing the wire from the coil should not be grounded when the points are open, the trick is that points are a dead short by design, when they open the short is gone and the juice goes through the windings to the rotor button instead of through the points and condenser to the ground. Can be checked with an ohm meter -points open,no continuity--- points closed,dead short. That is why the condenser is so important, without it the dead short burns up the points, voltage fluctuates, hard to start and runs poorly.
Sorry to be so long winded but ignition 101 was a week long 1 hour course 30years ago. Hope this helps.
