The burning smell from the exhaust pipe may be caused from oil or transmission fluid leaking into the exhaust pipe. For example, if your turbo is failing on the car, then that can cause leakage from the manifold into the exhaust pipe. There may be other reasons, too, which other people will be better articulating.
potato with in whistle in it, jammed into the exhaust pipe?
what kind of gasoline are you running? and what color is the smoke?
A hole in the muffler would cause a knocking sound in your muffler. A loose exhaust pipe can also cause a knocking noise.
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.
Exhaust gasses are escaping through a hole or rotted section of exhaust system
cause so times if you crash in a rock or a tree . then the oil comes out of the pipe
Unburned fuel in the exhaust system causes the backfire from the exhaust pipe.
The cause of an exhaust indicator light in a Volkswagen Beetle is probably an oxygen sensor. There also a possibility that an exhaust pipe is plugged or there is a hole due to rust.