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Which effect arises when gasoline's vapor pressure exceeds specifications?

A)Vapor lock in fuel lines
B)Increased engine knocking tendency
C)Catalytic converter deactivation occurs
D)Reduced exhaust particulate filtration

💡 Explanation

Higher vapor pressure leads to easier vaporization, causing bubbles in the fuel lines because the fuel pump can't maintain the required pressure against the vaporous fuel; therefore, vapor lock occurs, rather than improved combustion or catatlytic conversion, especially noticeable at elevated temperatures.

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