I often had a spark plug wire or coil wire in my bare hands with the
engine running to quick check the condition of an engine. Never noticed
anything on dry wires. Do not do it it the wet though.
Kees Oudesluijs
NL
Bob Spidell schreef:
> The magnetic field in the high-tension lead is inducing voltage, hence
> a current and spark, across the screwdriver. All electric currents do
> this, in fact, motors, coils and solenoids depend on it. Too much and
> you'll get a miss or possibly cross-firing.
>
> If you don't have a miss I wouldn't worry about it. The only way to
> prevent it would be to use some sort of shielding that is grounded to
> the engine (like coax cable has). I think that's also why some
> ignition systems use 8mm wires (Healeys' are 7mm, I believe), and
> 'modern' wires are wire-wound or otherwise shielded (also to reduce
> radio noise).
>
> If you grab the lead with your bare hands you'll be able to detect the
> field as well ;) (PLEASE DON'T DO THIS)
>
> bs
>
>
>
> wpollock@inbox wrote:
>> All summer I have had a persistant miss and I finally cured that by
>> putting a
>> new wire on #6. At the same time,when I hold a screw driver to
>> touch the
>> high tension coil- distributor wire and the end of the screw driver
>> touching
>> the engine I get a spark. This was true with the old wire as well as
>> brand
>> new wire. Should I get this spark and if not what is the cure? It
>> is a very
>> tiny spark with both the old and new wire and can only be see in the
>> dark.
>>
>> Bill Pollock
> **************************************************************
> Bob Spidell San Jose, CA bspidell@comcast.net
>
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