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AMDifficulty 1/5

In a warmed-up combustion engine, an abnormally high idle speed compared with the manufacturer’s specification can...

Correct answer

Increase fuel consumption.

Increase fuel consumption while the engine runs without throttle input. Distinguish abnormal idling from a temporarily higher speed when starting cold. If it persists outside the manufacturer’s specified conditions, have the vehicle checked; do not alter settings without following the instructions.

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  • Increase fuel consumption.

  • Always reduce fuel consumption to zero.

  • Guarantee that the vehicle pollutes less.

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