What Causes Difficulty Starting a Car in Cold Weather?

[DelEmmett]

The reasons why a car is hard to start in cold weather: 1. Excessive carbon deposits in the intake system and at the base of the intake valves, leading to an overly lean air-fuel mixture during cold starts; 2. Severe throttle body contamination, insufficient air intake, and the starter motor's RPM failing to meet requirements; 3. Excessive contact resistance in the battery cables or insufficient battery charge. In cold conditions, if the ignition capability is too weak, it becomes difficult to ignite the poorly atomized air-fuel mixture. At this point, consider checking whether the spark plugs are worn with excessive gaps or if the ignition coils have aged. Additionally, during cold weather, the battery's capacity decreases. You can determine if the battery is undercharged by observing electrical components such as lights and the horn.