Engine idle speed?

Engine idle speed?

• A. 2,000-2,100 RPMS
• B. 1,000-1,100 RPMS
• C. 900-1,000 RPMS
• D. 1,500-1,700 RPMS

Answer: (B)

Idle speed is how fast the engine runs when you’re not pressing the throttle. It has to be high enough to keep the engine from stalling and to spin the necessary equipment (like the alternator and oil pump) smoothly, but low enough to avoid wasting fuel and wearing parts unnecessarily. The best choice is the moderate range that keeps the engine running steadily with the electrical and mechanical loads active, so you don’t risk stalling when accessories come on and you don’t overwork the engine at idle. If the idle is set too low, the engine can stumble or stall under load and oil pressure can dip at idle. If it’s set too high, you waste fuel and add unnecessary wear. So a balanced, steady idle is the aim for reliable, smooth operation.

Idle speed is how fast the engine runs when you’re not pressing the throttle. It has to be high enough to keep the engine from stalling and to spin the necessary equipment (like the alternator and oil pump) smoothly, but low enough to avoid wasting fuel and wearing parts unnecessarily. The best choice is the moderate range that keeps the engine running steadily with the electrical and mechanical loads active, so you don’t risk stalling when accessories come on and you don’t overwork the engine at idle. If the idle is set too low, the engine can stumble or stall under load and oil pressure can dip at idle. If it’s set too high, you waste fuel and add unnecessary wear. So a balanced, steady idle is the aim for reliable, smooth operation.