The pressure of the oil was grader then the weight of the mud.
There is a chemical that the scientists or the people cleaning the spill r thinking of using it is supposed to i think absorb the oil or harden it so it can be cleaned i don't remember but the reason thy might not us it is because it is not necessarily good for the environment and for humans
Yes, a defective plug wire can cause a miss which will cause the RPMs to fall.
no it will just fail the spark plug more often
Depends on the year and engine which you fail to list.
Yes, they can, although with modern spark plug wires it happens less than it used to years ago. But yes - they can.
If it's the metal bar near the spark plug that you push towards the plug to kill it, all it does is ground out the plug, making it not spark. That bar is connected to the frame of the mower ie grounded which in turn grounds out the plug and wire
yes
kill your self
The kill switch interupts the spark to the spark plug and stops the eingine.
Check the glow plugs (ohms) and wiring for shorts
Depends on the year and engine which you fail to list. Need more information.
near the spark plug. some engines have lever that touch the spark plug ,others have a grounded switch