What does "engine tuning" refer to?

Engine tuning refers specifically to the process of adjusting various engine parameters to achieve optimal performance. This can involve modifying settings such as air-fuel mixture, ignition timing, and other performance-related factors to enhance power output, efficiency, and responsiveness of the engine.

When tuning an engine, technicians may utilize specialized tools and diagnostic equipment to monitor and adjust these parameters to make sure the engine runs smoothly and efficiently under various conditions. This can lead to improved horsepower and torque, better fuel economy, and reduced emissions, addressing essential performance metrics.

The other options focus on different maintenance tasks. Cleaning engine components is important for overall cleanliness but does not directly affect performance. Replacing engine oil is crucial for lubrication and engine health but is not the same as tuning. Cooling the engine after operation is essential for preventing overheating, but it does not modify engine parameters to enhance performance.