What is the starting jitter of Volkswagen Ling Du 280 engine?

The causes of engine start-up jitter of Volkswagen Ling Du 280 in Pacific Auto Network are: serious engine carbon deposit, dirty throttle or excessive carbon deposit in injector, ignition system failure, unstable oil pressure, aging engine components, etc.

1, low temperature. The temperature in the engine is not enough, and the temperature of fuel and lubricating oil is not enough. More fuel should be sprayed during cold start to meet the power requirements. The larger the gap between spark plugs, the smaller the ignition energy.

2. Fuel atomization is not good at low temperature, and fuel needs high ignition energy. When the automobile is used for a long time, the ignition gap of the spark plug is easy to become larger, which leads to the decrease of ignition energy, thus affecting the power performance and making the automobile shake. In addition, the aging of ignition coil, aging of spark plug high voltage line or leakage will also lead to the decrease of ignition energy;

3. The mixing ratio is not appropriate. There is an incorrect oil-gas mixture ratio in both open-loop and closed-loop control. In a closed-loop controlled car, the minimum working temperature of the oxygen sensor is 370 degrees Celsius. If the car has just started, the oxygen sensor will not work because the temperature in the exhaust pipe is lower than 370 degrees Celsius. At this time, the ECU made a mistake in judgment, and the actuator made a mistake in controlling the oil-gas mixing and ignition time, thus reducing the power output of the automobile and causing jitter.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)