"andrewpreece" wrote in message
...

snip
Also, is there a decent spark getting to them? Take one
out and connect its body to the block so it will still spark.

I would just point out that on modern HT systems the above is likely
to damage the ECU / ignition system and lf human fingers etc. get in
the wrong place, possibly kill the said human...

Gone are the days when the test described was advisable without the
correct knowledge and test equipment.