All of the following statements are true EXCEPT: A)on a late-model car running at 2,000 rpm with a hot converter, normal readings from the exhaust pipe should be above 0.1% (with an air injection system disabled). B)like HC, O₂ is not formed during combustion so it should be consumed during each combustion cycle. C)before combustion, the incoming air is 21% O₂. D)when checking O₂ emissions in the exhaust, it is very important that there be no supplemental air or exhaust system leak.

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The Answer of All of the following statements are true EXCEPT: A)on a late-model car running at 2,000 rpm with a hot converter, normal readings from the exhaust pipe should be above 0.1% (with an air injection system disabled). B)like HC, O₂ is not formed during combustion so it should be consumed during each combustion cycle. C)before combustion, the incoming air is 21% O₂. D)when checking O₂ emissions in the exhaust, it is very important that there be no supplemental air or exhaust system leak.

All of the Following Statements Are True EXCEPT