Is an ignition advance angle of -10 normal?

[StAniyah]

An ignition advance angle of -10 is not normal. Here are the details about negative ignition advance angle: 1. Cause: The engine's ignition advance angle is negative because the knock sensor is faulty. If the ignition advance angle consistently shows a negative value, it indicates that the engine ignition is in a delayed state, possibly due to poor anti-knock performance of the car or other abnormal engine issues. 2. Function: An appropriate ignition advance angle allows the engine to perform the most mechanical work per cycle. If the ignition advance angle is too large, it can easily cause detonation. If the ignition advance angle is too small, the exhaust temperature rises, and power decreases.