TFI I

Exploded View Of TFI Ignition System Distributor.:

Operation
The distributor Fig. 1, sends a signal to the ignition module which controls the timing of the spark to the spark plugs. The signal is created when the reluctor (armature), attached to the distributor shaft, rotates past the stator assembly. The rotating of the reluctor causes a fluctuations in a magnetic field produced by the stator assembly magnet. These fluctuations cause a voltage in the stator assembly pick-up coil. This signal is sent to the module which is connected directly to the pick-up coil assembly.
The signal for initial spark timing to the module is controlled by the centrifugal and vacuum advance mechanisms. the centrifugal advance controls spark timing based on engine RPM. The vacuum advance controls timing in response to engine load.