Reasons for Engine Shaking While Driving
1 Answers
Reasons for engine shaking while driving: 1. Damaged spark plugs: Wear of the spark plug electrode gap can lead to insufficient spark plug ignition, resulting in incomplete combustion of the air-fuel mixture, which causes the car to shake during acceleration. Additionally, cracks in the ceramic part of the spark plug can prevent ignition, causing one cylinder to stop working, which also leads to shaking during acceleration. In such cases, the spark plugs should be replaced. 2. Poor fuel quality: Low-quality gasoline can result in poor atomization by the fuel injectors, leading to incomplete combustion of the air-fuel mixture in the cylinders, which can cause the engine to shake and lose power. It is recommended to use higher-grade gasoline after finishing the current tank and to perform a fuel system cleaning. 3. Excessive carbon buildup: A dirty throttle body or excessive carbon deposits on the fuel injectors can cause the throttle to not close properly or the idle control motor to stick, leading to high idle speeds. Carbon buildup generated during engine operation can also cause vehicle shaking, especially when starting the car. The engine may shake more than usual, and in severe cases, it may fail to start on the first attempt. 4. Unstable fuel pressure: If you have already cleaned the engine carbon deposits, changed the oil and spark plugs, but still notice shaking at idle, it is recommended to visit a 4S shop to check the fuel supply pressure and the intake pressure sensor. Abnormal fuel pump pressure or incorrect readings and malfunctioning of the intake pressure sensor can cause the vehicle to shake. In such cases, check the fuel pressure and replace components if necessary.
