I am not, no!Firesong wrote:Hopefully your not suggesting pulling plugs while it's running to fire the compression out the glow plug hole? Can you say bullet to the head?
But the question was - would removing the plugs stop the runaway - it would.
The reason it would stop the runaway is not because glowplugs are used to start or heat the engine, but the act of removing the glowplugs leaves a hole in the head, which destroys the compression. No compression, no fuel ignition, no power stroke.
But, like you said, the glowplug would fire out under high pressure, which would be bad. There is also the risk of the head exploding during the runaway while you were trying to remove the plugs, which would mean you would get a piston and a valve cover to the face perhaps.