Yes it is because it makes you get rid of your wife.
it gets rid of its extra water by skirting it out when every it gets full or has to much water inside it
excessive or unburnt fuel.
Black is excessive fuel, or rich.
Yes. A sticking fuel injector can allow far too much fuel into a cylinder.
Building excessive fuel pump back pressure Overheating fuel pump
Drink lots of water. Water loosens the mucus and helps you to cough it up.
Bad fuel pump diaphragm or excessive cranking with out starting . If it's alot look at fuel pump .
the black smoke is unburnt fuel. you need a leaner air/fuel mixture.
Bury it as it will create methane fuel
Black smoke = excessive fuel entering the engine
bad piston rings.