What Causes the Car Body to Shake When Lightly Pressing the Accelerator?
1 Answers
The reasons for car body shaking when lightly pressing the accelerator: 1. Damaged half-shaft: Under long-term torsional fatigue and impact forces, the car's half-shaft is prone to bending, twisting, breaking, or wear and misalignment of 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 has many components. Any abnormality or failure in one of these components can cause the car engine to shake during acceleration. 3. Spark plug failure: In the engine ignition system, ignition high-voltage wires rarely have issues, so the main problems usually lie with the ignition coil 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 shaking 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.
