Posted by John T on December 09, 2012 at 09:55:57 from (216.249.82.117):
In Reply to: Ignition issue posted by Dave H (MI) on December 09, 2012 at 08:45:51:
With the ignition on there should ALWAYS be voltage (with respect to frame ground) on the hot INPUT (NOT to distributor) side of the coil.....
Over on the coils other OUTPUT terminal:
Hot battery voltage when points are open ZERO volts when points are closed
Therefore if the engine is cranked over slowly a test lamp on the coils output (to distributor) should flash ON (points open) and OFF (points closed)
If the lamp never goes off (should when points are closed) the points arent fully closing or are burned/carboned severely and not conducting or the points or distributor isnt well grounded
If the lamp never comes on (and all else is okay), condensor is shorted or points are shorted out or remain closed or points or condensor wires are shorted or the distributors insulated side pass through stud/terminal is shorted or else the coils LV primary is bad/open
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