sounds like you've blown the gascit. (dont know how to spell it but it's pronounced gas-git). it's a rubber seal that's in the top part of then engine. you might also have engine oil in with your spark plugs. (can be caused by faulty gascit.)
engine oil in with your spark plugs can and will...
it's cultural in some places. india, africa ect. weather it's cultural or religious can depend.
i know for a fact that in certain countries arranged marriages are illegal regardless of culture or religion because it infringes on free will.