How to Deal with Engine Knocking?

[DelStephanie]

Methods to deal with engine knocking: use higher-octane fuel or retard the ignition timing to reduce combustion pressure. When the knock sensor detects engine knocking, it delays the ignition timing to a point where knocking does not occur. Once the engine stops knocking, the ignition timing is gradually restored. Ways to prevent knocking: 1. Choose the appropriate gasoline octane rating; 2. Remove carbon deposits; 3. Use suitable gasoline additives; 4. Avoid high gear at low speeds. Normal combustion in a gasoline engine occurs when the air-fuel mixture is ignited by a high-voltage spark, and the flame spreads outward from the spark center, igniting all the mixture in the combustion chamber—this is normal combustion. If the remaining mixture ignites spontaneously before the flame reaches it, this is called knocking, which is abnormal combustion. Knocking should not occur during normal driving; otherwise, it indicates an engine fault.