Is Idling to Warm Up the Car Harmful?

[StAxel]

Idling to warm up the car is harmful. The reasons are that during idling, the engine oil pressure is relatively low, leading to poor lubrication conditions. Additionally, unburned fuel or insufficiently burned fuel can easily form carbon deposits on the cylinder walls, accelerating wear on moving parts. Below are the specific harms of idling to warm up the car: 1. Shortens engine lifespan: During idling, the preparation time for fuel ignition is prolonged, and the cylinder's sealing performance decreases, which can easily cause knocking sounds, thereby reducing the engine's lifespan. 2. Increases fuel consumption: At low engine speeds, fuel atomization is adversely affected, leading to incomplete combustion, poor heat dissipation, and higher fuel consumption. 3. Damages the catalytic converter: Prolonged idling results in a high concentration of the air-fuel mixture, with low oxygen content in the exhaust. If the mixture does not fully burn at the catalytic converter, it can easily cause the converter to overheat and fail.