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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 Torque Converter Housing

Mainshaft Bearing and Oil Seal Replacement Special Tools Required Adjustable bearing puller, 25-40 mm 07736-A01000B or 07736-A01000A Attachment, 62 x 68 mm 07746-0010500 Attachment, 72 x 75 mm 07746-0010600 Driver 07749-0010000 1. Remove the mainshaft bearing and oil seal using the adjustabl

 Engine Coolant

Adding Engine Coolant If the coolant level in the reserve tank is at or below the MIN line, add coolant to bring it up to the MAX line. Inspect the cooling system for leaks. Always use Honda Long-life Antifreeze/ Coolant Type 2. This coolant is pre-mixed with 50 percent antifreeze and

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