What Causes Car Shaking?
2 Answers
The reasons for car shaking are: 1. Incomplete fuel combustion leads to insufficient power and low ignition energy. During startup, especially when fuel and lubricant temperatures are low, more throttle is needed to meet power demands. Over time, the spark plug gap gradually widens, reducing ignition energy and causing poor fuel atomization, resulting in car shaking. 2. Aging ignition coils, high-voltage wires, or electrical leakage in spark plugs can also reduce ignition energy. 3. There are many reasons for car shaking during cold or warm starts, including incomplete fuel combustion, abnormal engine coolant temperature, low cylinder pressure, or clogged fuel injectors. If your car shakes during startup, it is recommended to promptly visit a 4S shop for inspection and repair.
Driving vibrations are quite annoying for me. The most common issue is tire-related, such as unbalanced tires or low tire pressure, which causes the car to bounce up and down while driving, especially noticeable at high speeds. Additionally, if the wheel hub is deformed or has hit potholes, it can also cause irregular vibrations. Engine components are also crucial. Worn-out spark plugs or faulty ignition coils leading to engine misfires can cause intermittent tremors. Last time, I solved it by replacing the spark plugs. A loose suspension system, such as worn-out control arm ball joints, can increase wobbling when turning or going over bumps during driving. An unbalanced driveshaft is also a potential cause, particularly for front-wheel-drive cars when the half-shaft is damaged, making them more prone to shaking. It's advisable to start by checking the simple things like tire pressure and wheel balance. If the issue persists, then take it to a professional shop to diagnose mechanical problems.
