Starting Jerks Like Fuel Starvation?
1 Answers
First, it could be due to the engine, caused by blockages or insufficient pressure in the fuel supply system. Second, it might be related to the clutch, where clutch wear leads to insufficient transmission power, which is also one of the main reasons for weak starting and jerking. Several specific causes for this issue include: 1. Cold engine. Especially during cold starts in winter, the temperature inside the engine is insufficient, and the temperatures of both fuel and lubricating oil are too low. Therefore, more fuel should be injected during cold starts to meet power requirements. Poor fuel atomization at low temperatures leads to reduced ignition energy, affecting power performance and causing the car to shake. 2. Carbon deposits in the engine and intake tract. Since carbon deposits can absorb a certain amount of fuel, the ECU makes incorrect judgments. For example, if the computer controls the injection of 100 units of fuel-air mixture, but only 90 units actually enter the cylinder, with 10 units absorbed by carbon deposits, even if the remaining 90 units burn completely, the required power performance cannot be achieved, making shaking inevitable. 3. Ignition system failure. Aging of the ignition system weakens the ignition energy, causing the ignition coil or spark plugs to fail to ignite continuously or to have interruptions during ignition. Intermittent ignition prevents smooth and continuous power output, resulting in jerky acceleration.
