Why does the car jerk when pressing the accelerator?
1 Answers
The reasons for body shaking when pressing the accelerator are as follows: 1. Half-shaft damage: Due to long-term torsional fatigue and impact forces, the car's half-shaft is prone to bending, twisting, breaking, or wear and tear on the spline teeth, which can cause rhythmic shaking in the front of the car. The shaking disappears or lessens when the accelerator is released. 2. Fuel system malfunction: The car's fuel system is relatively large and consists of many components. If any one of these components is abnormal or faulty, it can cause the car engine to shake during acceleration. 3. Spark plug malfunction: In the engine ignition system, the ignition high-voltage wires rarely have issues, so the main problems usually lie with the ignition coils and spark plugs. Since both are wear-prone parts, degraded spark plug performance or the use of inferior spark plugs can lead to weak acceleration and jerking during acceleration. 4. Fuel line issues: Fuel line problems are generally caused by blockages, leading to poor fuel supply, manifested as engine shaking, unstable idle speed, or stalling while driving. Additionally, fuel pump failure can also cause engine shaking. To diagnose fuel pump issues, disconnect the fuel line and check the flow rate and volume.
