hi, friend.
I was reading your problem, and I must imagine that apparently you have a spark problem. Is that? If so, starting from zero, you must leave more behind with the electrical circuit. First of all you have to verify whether the voltage signal that comes from the power sheet to the terminal (15 or +) of the coil is correct, it should not be less than 10 volt; If that same voltage signal is correct, it must be present in the arrival of the distributor with the closed platinum. If you install a spark plug in the cable that goes from the coil to the distributor with the open sheet contact and the body of the spark plug landed to the engine, to the forces with a screwdriver to open the platinum must occur spark.
With this procedure you can rule out that you do not have a problem in: coil, voltage circuit, capacitor.
Take these tests and tell me the result.
luck.....