Why isn't there a spark in a 1992 Mercury Tracer?

The coil in the Cirrus is a very small unit inside the distributor, When it gets warm, it short circuits its own windings. This occurs in the secondary or high tension section of the coil with little or no output to the plugs. Also it does not set a fault code because OBD-1 & 2 opnly reads the primary section of the coil. Aftermarket coils are available which connect to the original terminal on the distributor. An adapter is required to connect the new high tension lead.