What are the symptoms of excessive carbon deposits in a car?

[LeMatthew]

Excessive carbon deposits in a car have the following manifestations and related solutions:1. Symptoms of excessive carbon deposits in a car include: (1) Reduced engine power, difficulty in starting or climbing hills, or symptoms of unresponsiveness when accelerating; (2) Difficulty in starting the car; (3) Manual transmission vehicles tend to stall when shifting gears or when coasting in neutral; (4) Increased fuel consumption, affecting the engine's efficiency.2. Solutions for excessive carbon deposits in a car include: (1) Pay attention to fuel quality, try to use high-quality gasoline and engine oil to prevent the formation of impurities; (2) Replace spark plugs to improve the car's ignition quality and ensure more complete combustion of gasoline.