What Causes Sudden Loss of Power and Severe Shaking When Accelerating?

[DelKai]

Reasons for car shaking: 1. Excessive carbon deposits If there is severe carbon buildup in the engine cylinders, it can lead to clogged spark plugs and valves, directly causing the car to shake at idle. If the vehicle's acceleration performance has significantly deteriorated and the shaking persists, it may be time to consider an engine cylinder cleaning. 2. Fuel supply system failure Unstable fuel pressure can easily cause inconsistent mixture concentrations, resulting not only in shaking but also unstable idle speeds. First, consider replacing the fuel filter, as prolonged use can cause the filter element to clog. Then check the fuel pressure bypassing the fuel filter; if abnormal, it could indicate a fuel pump issue. 3. Worn engine mounts This is also a very common cause of shaking. If your car's engine shakes increasingly severely but the power does not weaken accordingly, it might be due to worn engine mounts. 4. Misfiring This is the most common cause of engine shaking, if not the only one. The problem lies with the engine ignition coils or spark plugs. If the ignition coils malfunction or the spark plugs fail to fire for some reason, the car will experience shaking.