What are the causes of engine shaking?

[BraydenDella]

Engine shaking causes: 1. High-voltage line breakage refers to the disconnection of the high-voltage wire core, affecting ignition and causing abnormal engine shaking; 2. Check if the spark plugs need replacement, as electric spark plugs have a lifespan - after exceeding 30,000 kilometers, ignition efficiency will significantly decrease, which may affect ignition; 3. Excessively dirty air filter; 4. Abnormal engine coolant temperature - if the temperature is too high or too low, it will alter the air-fuel mixture ratio, causing adhesion and reduced lubrication, leading to abnormal engine shaking; 5. Engine idle speed too low - engine idle speeds are set by the vehicle's computer. When the engine speed drops below a certain range, the car's computer will automatically adjust it. If the idle speed is too low, shaking will occur.