How to Solve the Jerking Sensation When Starting a Car?
2 Answers
Methods to eliminate the jerking sensation when starting a car: ensure that the input and output speeds of the clutch are identical during each gear shift. You can first release the clutch by 70% to engage it semi-engaged, gently synchronizing the engine and transmission speeds. Below are detailed techniques for eliminating car jerking: 1. Start in first gear. Find the engagement point of the left foot clutch and follow the principle of "fast, slow, fast" when lifting the clutch. After the clutch is fully engaged and the car moves one or two meters, gradually and evenly increase the throttle with your right foot. The car will smoothly accelerate from a standstill, ensuring a smooth start. 2. Generally, the upshift RPM is usually between 2000 and 2500, while the downshift RPM is around 1500 and should not be lower than 1000 RPM to avoid excessive damage to the car engine and transmission, as well as the risk of excessive carbon buildup. 3. Pressing the throttle during gear shifts can easily cause the engine to rev too high without load, while not pressing the throttle may lead to a rapid drop in engine RPM, resulting in jerking. For car models with slightly weaker low-RPM torque, you can lightly press the throttle during gear shifts to prevent both high-RPM free revving and rapid RPM drops that cause jerking.
I've experienced jerking issues when starting the car. As an experienced driver, I believe the most common cause is clutch wear leading to inconsistent power transmission, especially in manual transmission vehicles. Check if the clutch disc is worn or if the clutch linkage is loose. If the jerking is accompanied by shaking, it might be an ignition system problem—dirty spark plugs or faulty ignition coils. It's advisable to warm up the engine before starting and avoid slamming the accelerator. Regularly changing transmission fluid and cleaning the throttle body can prevent carbon buildup. If the issue persists, take the car to a repair shop immediately to check for trouble codes with diagnostic equipment, ensuring driving safety. This saves both money and hassle—don't let small problems turn into big troubles.
