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

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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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 Connecting Rod Bearing Replacement

Rod Bearing Clearance Inspection 1. Remove the oil pump. 2. Remove the baffle plates (see step 7). 3. Remove the connecting rod cap and bearing half. 4. Clean the crankshaft rod journal and bearing half with a clean shop towel. 5. Place plastigage across the rod journal. 6. Reinstall the bearin

 Connectors and Harnesses

Connector Index Identification numbers have been assigned to in-line connectors, junction connectors, and terminals. The number is preceded by the letter ºC" for connectors "G" for ground terminals or "T" for non-ground terminals. * 1. With seat heater * 2: Without seat heater Connector to Harne

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