In automotive terms, it sounds to me like it "threw a rod". A few reasons that would happen could be from, lack of engine oil, lack of oil and filter changes, high mileage and abuse. If that is the case the engine is all done.
what is the worst for your health breathing in tobacco smoke or exhaust fumes
emissions and exhaust
No, it will not cause smoke from the exhaust pipe. However the leaking oil can drip on the exhaust manifold where it will be burnt and smoke.
Yes. But you will have smoke from the exhaust, because the oil will seep through between the seal and the valve (exhaust side).
how can i get black exhaust smoke stuck on my dual exhaust
the smoke that comes out of a exhaust pipe is supposed to be white
Black smoke is ALWAYS too much gas going through the engine. They get bad gas mileage. See a mechanic.
smoke poured out of the exhaust of the car.
An Rx7 is a model of a car that Mazda makes. All cars can smoke lightly through the exhaust system. If the smoke that is coming out becomes excessive or black consult a mechanic.
It is buring oil this is a wrong answer whe engine burn oil to the exhaust smoke is a heavy white smoke no black
blown turbo - worn turbo bearing causing oil to suck through and into exhaust manifold - results in no power and neat oil burning in the exhaust - major black smoke
Could be a diesel? If not then replace your oxygen sensor on your exhaust. A bad oxygen sensor causes the exhaust smoke to be dark in color.