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Which consequence results when exceeding gasoline's vapor pressure limit inside a carburetor?

A)Fuel pump cavitation decreases flow
B)Air-fuel ratio becomes excessively lean
C)Volumetric efficiency sees significant increases
D)Engine compression ratios climb quickly

💡 Explanation

Exceeding vapor pressure causes vapor lock via boiling, leading to a lean air-fuel ratio because the fuel flow is disrupted from vapor formation; therefore, the engine runs lean rather than rich, since less fuel vaporizes optimally.

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