Can Revving in Neutral Clear Carbon Deposits?

[DeAngelo]

Revving the engine in neutral can help clear carbon deposits. The correct method and precautions for revving in neutral to remove carbon deposits are as follows: 1. Start the vehicle with the gear in neutral, press the throttle to the maximum, maintain the RPM at 4000 for 3 to 5 seconds, and repeat this three times. 2. Prolonged revving in neutral can cause severe incomplete combustion, which not only leads to more carbon deposits but also clogs the catalytic converter, resulting in abnormal high temperatures. This high temperature may cause wiring to ignite spontaneously, leading to serious consequences. 3. Avoid prolonged idling. Extended idling delays the engine reaching normal operating temperature, slowing the evaporation of gasoline sprayed onto the back of the valves, thus promoting carbon deposit formation. 4. Frequent idling reduces the airflow into the engine, weakening the flushing effect on carbon deposits and accelerating their accumulation. 5. Use high-quality gasoline. The wax and gum impurities in gasoline are the main components of carbon deposits, so cleaner gasoline tends to produce fewer carbon deposits.