ORIGINAL: av8tor1977
My dad used to be able to do that, but I hate getting shocked. I would see him pull plug wires on a running car to find a dead cylinder, and he would jerk just a little bit and say
My dad would do that too on a lawnmower.
At work I had a maintenance man working on a real small fork lift and a janitor came up bragging that he could grab the plug wires at the spark plugs and stop the engine if it was idling. He lighted up like a hog at the slaughterhouse when he grabbed those plugs. But eventually the engine quit. I don't think he was worth a toot the rest of the day?
The moral to this story is: I don't think it is a very good idea to be holding spark plug wires.