What are the effects of prolonged idling on the engine?
4 Answers
Prolonged idling has the following effects on the engine: Combustion inside the engine becomes incomplete, leading to increased carbon deposits in the engine. If carbon deposits accumulate in the intake tract, they can affect the engine's air intake, resulting in an incorrect air-fuel ratio. If carbon deposits form in the combustion chamber, they can increase the compression ratio of the combustion chamber, thereby raising the likelihood of engine knocking. An engine (Engine) is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (such as Stirling engines, steam engines, etc.), jet engines, electric motors, and more.
I think prolonged idling has a significant impact on the engine. Based on my decades of driving experience, when idling, the engine keeps running at low speed, which can easily cause the oil temperature to become too high or too low. Over time, carbon deposits can build up in the fuel system, especially in winter or hot weather. This can clog the fuel injectors, make the engine sound louder, and increase fuel consumption. I still remember a friend whose car idled for too long, and later it cost a lot to repair because the valves and spark plugs were corroded. Normally, I turn off the engine if I park for more than a minute. This helps protect engine components, reduce wear, save fuel, and extend the engine's lifespan. It's a good habit for any car owner.
As an energy-conscious young adult, I've noticed that prolonged idling not only wastes gasoline but also needlessly emits exhaust fumes, polluting the environment. Carbon buildup occurs faster when the engine runs at low speeds, accelerating wear on pistons and cylinders while increasing fuel consumption by 10-20 cents per kilometer. I've calculated that idling for half an hour daily adds up to significant fuel and maintenance costs over a year. Additionally, it strains the engine cooling system, causes unstable oil pressure, and affects overall performance. For the car's sake, I always advise friends to turn off the engine while waiting—it's cleaner for the planet and saves money too.
As a parent who drives my kids to school daily, I've noticed that idling is quite harmful to the engine. It accelerates wear and tear, especially on belts and bearings, while abnormal oil temperatures lead to insufficient lubrication and overheating. Over time, carbon buildup can cause spark plug failure and starting difficulties. I recommend turning off the engine if parked for more than a few minutes—this protects the powertrain and puts safety first.
