With the old, carbon monoxide, hydrocarbon, oxides of nitrogen and sulfur compounds are hydrocarbons, about 55% out of the exhaust 25 woven% out of the room the shaft. The crank, and the other 20% evaporation in the carburetor and fuel tanks, oxide of nitrogen is nitric oxide (NO), nitrogen dioxide. (NO2) and Nai, said oxide (N2O).
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