On Thu, 7 Nov 2002, Bob Blick wrote:

*>> *>True. Even the electronic ignition systems in new cars (Toyota in
*>> *>particular) do not survive losing a spark plug wire with engine running.
*>>
*>> So what do you do when you adjust them ?! Put on a dummy load ? I've heard
*>> of lead pencils being used for this in a pinch.
*>
*>You don't ever disconnect a wire with the engine running. An engine
*>analyzer will show you weak cylinders, etc. But I do not know the
*>"backyard mechanic's method" for new cars now that pulling the wires is
*>not allowed.

Oh. No pulling wires ? I feel that aircraft engines ignitions are exempt
from this limitation. I once had a Bendix coil that had a built in spark
gap for protection. It was indestructible (used for high voltage
experiments). It must have been 50 years old.

Peter

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