Is Idling Harmful to a Car?

[MacDylan]

Long periods of idling can cause certain damage to a car. Here is relevant information: 1. The main harm is that prolonged or frequent idling can easily lead to carbon buildup in the engine cylinders, and the throttle may also be affected. Due to the low engine speed and low intake efficiency during idling, combustion is not very complete, making it prone to carbon buildup. More importantly, the accumulated carbon cannot be expelled and continues to accumulate in the cylinders and intake passages, significantly accelerating the rate of carbon buildup. 2. When carbon buildup reaches a certain level, it can reduce the car's power performance and, over time, easily cause engine wear. During idling, the vehicle does not perform any external work. In this state, the engine only overcomes its own resistance, so the engine should be turned off during prolonged waiting periods.