Honda CR-V: Emissions Controls

The burning of gasoline in your vehicle’s engine produces several byproducts.

Some of these are carbon monoxide (CO), oxides of nitrogen (NOx), and hydrocarbons (HC).

Gasoline evaporating from the tank also produces hydrocarbons. Controlling the production of NOx, CO, and HC is important to the environment.

Under certain conditions of sunlight and climate, NOx and HC react to form photochemical ‘‘smog.’’ Carbon monoxide does not contribute to smog creation, but it is a poisonous gas.

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 The Clean Air Act

The United States Clean Air Act* sets standards for automobile emissions. It also requires that automobile manufacturers explain to owners how their emissions controls work and what to do to

 Crankcase Emissions Control System

Your vehicle has a positive crankcase ventilation system. This keeps gasses that build up in the engine’s crankcase from going into the atmosphere. The positive crankcase ventilation valve

 Evaporative Emissions Control System

As gasoline evaporates in the fuel tank, an evaporative emissions control canister filled with charcoal adsorbs the vapor. It is stored in this canister while the engine is off. After the en

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 Tire Labeling

The tires that came on your vehicle have a number of markings. Those you should be aware of are described below. Tire Size Whenever tires are replaced, they should be replaced with tires of the same size. Below is an example of tire size with an explanation of what each component m

 Fuses

The vehicle’s fuses are contained in three fuse boxes. The interior fuse box is located under the dashboard on the driver’s side. The fuse label is attached under the steering column. The auxiliary fuse box is located next to the interior fuse box. To open the fuse box lid, pull

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