What Causes Car Shaking During Ignition?
1 Answers
The reasons for car shaking during ignition are: 1. Poor fuel quality: Inferior fuel has poor volatility, especially in winter when temperatures are low. During cold starts, the engine block temperature is low, making fuel atomization difficult and preventing proper mixing of fuel and air in the cylinders; 2. Carbon buildup on engine valves and intake manifold: Since carbon deposits can absorb some fuel, the electronic control unit may make incorrect judgments; 3. Spark plug issues: During ignition, when fuel and lubricant temperatures are low, sufficient fuel is needed to meet power demands. Over time, the spark plug electrode gap gradually increases, leading to reduced ignition energy and poor fuel atomization.