Silly question, but I’ll ask it anyway.

Most domestic vehicles use spark plug wires with a fiber glass core covered in latex graphite, which provides between 10,000 and 12,000 ohms of resistance per foot of wire.  But this varies with wire type   

Do you really want to put all of that resistance in the signal path???

https://youtu.be/FpPBxN_FzmA

This is true about dieseling and in fact if you put a drop of oil on the back of a high performance air gun pellet, the heat generated by the rapidly compressed air in the chamber will ignite the spot of oil and increase the pressure of the shot..., maybe to the point of splitting the barrel.

https://youtu.be/yyfxinhOQxs