What happens if the engine idle speed is set too high?

En español: ¿Qué ocurre si el ralentí del motor está ajustado demasiado alto?

A Fuel consumption and engine wear both increase Correct answer
B It improves performance and saves fuel
C It has no effect on the engine
D It reduces polluting emissions

Why this is the correct answer

If the idle speed is too high, both fuel consumption and engine wear increase. It must be correctly adjusted.

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