1 Stress: Besides causing muscle tension, stress can cause chest pain. 2  Figure out what is causing you stress, and cut it out of your routine if possible. 3  Breasts: As your pregnancy progresses, your breasts will become larger. 4  This can cause shortness of breath or chest pain.
An exhaust system is usually piping used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes. Depending on the overall system design, the exhaust gas may flow through one or more of:
What you are seeing is not smoke but steam condensing as it exits the exhaust and hits cold air (just like when a kettle boils). The steam is the result of water entering the cylinder(s) due to a head gasket failure. The water boils in the cylinder and is expelled with the exhaust gases.