What Causes Slow Ignition Response?

[AryaLee]

If the ignition response is sluggish when the engine is cold but normal when warm, it is likely related to cold weather. In winter, lower temperatures cause the engine block to be cold during startup, making fuel difficult to atomize. This results in insufficient mixing of fuel and air in the cylinders, leading to a sharp drop in gasoline vaporization. Below is relevant information about vehicle startup: 1. Precautions: Cold starts require engine preheating. The preheating time depends on the temperature, but generally, idling should return to normal before driving. Always remember to fasten your seatbelt and check if the driver's seat and rearview mirror positions are appropriate—adjust if necessary. 2. Tips: Wait about 5 seconds before starting the car to allow the onboard computer to perform checks. After starting, the RPM may reach 2500, then drop to 800 after some time. This is because cold idling is higher, while warm idling returns to normal.