Neither. It's a vapor (gas).
carbon monoxide is in exhaust gas
liquid. think of what you put into your car.
Engine exhaust.
carbon dioxide
It comes out of your exhaust, in the engine it combusts making your car propel forward, the vaporized gasoline exits your exhaust.
The black gunk that comes out of the exhaust pipe when starting the car is probably carbon buildup within the exhaust system. Carbon buildup happens when the engine is not burning fuel as efficiently as it can.
Carbon monoxide comes out of a car. This colorless gas that is released from a car's exhaust is poisonous when inhaled in a highly concentrated form.
Car exhaust is a mixture of gases, including carbon dioxide (CO2), nitrogen oxides (NOx), water vapor (H2O), carbon monoxide (CO), and unburned hydrocarbons. It also includes particulate matter such as soot and metals. These emissions can have harmful effects on human health and the environment.
Clean the mouse nest out of the air cleaner.
Exhaust leak? Vacuum leak?
usually an exhaust leak under the hood(exhaust manifold or o ring/flex pipe that fastens to solid pipe).your car pulls air from the front windshield area,and it seeps into it and blows in
Oxygen which comes out of a car exhaust is a product of reaction in the catalytic converter. In the catalytic converter, oxides of nitrogen undergo reactions to form less harmful nitrogen gas and oxygen, which are then expelled through the exhaust system.