1. Spark Plugs: Worn-out or faulty spark plugs can cause the engine to misfire, resulting in jerking and shuddering.
2. Fuel System Issues: A clogged fuel filter or fuel injector can restrict the flow of fuel to the engine, causing the car to jerk and shudder.
3. Ignition Coil: A faulty ignition coil can also lead to misfires and jerking of the car.
4. Vacuum Leak: A vacuum leak can cause the engine to run lean (too much air, not enough fuel), leading to jerking and shuddering.
5. Transmission Issues: If the transmission is slipping or has any issues, it can also cause the car to jerk and shudder.
6. Engine Mounts: Worn-out or broken engine mounts can allow the engine to move excessively, causing the car to jerk and shudder.
7. Driveline Issues: Problems with the driveshaft, universal joints, or CV joints can also lead to jerking and shuddering.
8. Oxygen Sensors: Faulty oxygen sensors can send incorrect signals to the engine's computer, affecting the air-fuel mixture and causing jerking.
To determine the exact cause, it's recommended to have a qualified mechanic inspect your car. They can perform diagnostic tests, such as scanning for error codes, to identify the underlying issue and recommend the appropriate repairs.
