Richard Prosser wrote:

>> Are you saying that the current into the spark is too low for the
>> current clamp to detect it? 
> 
> I'm saying I'm not sure about it. For a given energy spark the energy
> = Volts * Amps * time so at a high voltage the current is going to be
> low. But against this, the actual voltage across the plug when fired
> is not that high, and there is probably enough capacitance in the
> circuit (coil windings - case) to produce a reasonable current pulse
> so you could be OK.

And you're taking energy away from the spark pulse. May be not a wise thing
to do, especially since you have the primary pulse so nicely available.

Gerhard

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