I like to bench test those, that way it only has to be put back on once.
What you describe is the points not making connection. That is caused by the contact surface being corroded or burned, or if new they may have an anti- corrosion coating that needs to be cleaned off. Or there could be a bad wire connection, bad connection from the coil, the points are improperly adjusted, or the points are defective. These problems are much easier to correct on the bench.
Setting the points to the correct gap is critical, be sure they are set and tightened securely. Be sure the feeler gauge is clean. Good idea to clean them and blot with a paper business card when done.
To bench test, using an ohm meter set on a low ohm setting, connect one lead to the coil primary and the other to the distributor metal housing. You should see the meter swing as you turn the shaft, opening and closing the points. If you don't have an ohm meter, you can use the test light and a 9 volt battery. Connect one side of the battery to the distributor housing, the other to the test light lead, hold the probe to the coil primary wire. The light will come on when the points close, off when open.
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