What might a mechanical point in an ignition system control?

In an ignition system, a mechanical point is crucial for controlling the timing of the ignition event, which refers to the precise moment the spark plug fires to ignite the fuel-air mixture in the cylinder. This timing is critical for engine performance, as it affects how effectively the engine generates power.

When the mechanical point opens and closes at the right intervals, it ensures that the ignition occurs at the optimal time during the engine's cycle, allowing for maximum efficiency and power output. If the timing is off, it can lead to engine knocking, reduced power, poor fuel economy, and increased emissions.

Other elements related to the engine's operation, like fuel flow, air intake, and exhaust timing, are managed by different components of the engine system, making them less relevant to the function of the mechanical point in the ignition system.