Timing light use

[ertech]

Hello guys.
My timing light days are foggy .If I get a timing light pulse on each wire does that meet the distributor is sending electricity or the spark plug igniting ?
Can I get a pulse even if the plug does not fire ?

Thanks

[nocarrier]

The inductive pickup is sensing the high voltage in the wire. If the pickup detects said voltage the strobe flashes. Therefore high voltage must be there.....

It wont tell you if the spark is weak or if the plug actually fired. There could be a voltage leak, bad spark plug, bad resistor end, etc...