What are the causes of engine vibration in the Roewe 550?
3 Answers
The causes of engine vibration in the Roewe 550: 1. When engine carbon deposits are not cleaned for a long time, they can block the fuel injected by the injectors, preventing complete combustion in the cylinders. In this case, the carbon deposits should be cleaned promptly; 2. During cold starts, if the water temperature is insufficient, the engine may not operate normally, leading to abnormal vibration. This issue can usually be resolved by warming up the car for a while; 3. If the ignition system malfunctions and the spark plugs fail to work properly, incomplete combustion of fuel in the cylinders may occur. In this scenario, a detailed inspection and repair of the ignition system are necessary; 4. If the engine mounts are aged, the engine may not be effectively secured, resulting in abnormal vibration. In this case, the engine mounts should be replaced. The Roewe 550 is SAIC's first model based on the DIS full digital simulation development system, with body dimensions of 4624mm in length, 1827mm in width, and 1480mm in height.
My Roewe 550 has been running for almost ten years, and engine vibration has been a persistent issue. It often fails to start due to worn-out spark plugs, and when one cylinder misfires, the car shakes violently. Alternatively, excessive carbon buildup in the throttle body can disrupt the air-fuel mixture. The engine mounts' rubber aging and loosening can also amplify vibrations, especially noticeable during cold starts. Additionally, clogged fuel injectors or a dirty air filter can lead to unstable combustion. The shaking isn't just noisy and annoying—it also increases fuel consumption and engine wear. I replace the spark plugs every 20,000 kilometers, regularly clean the throttle body, and use WD-40 to spray the mounts for lubrication and to prevent aging. Proactive maintenance saves hassle; delaying repairs can be costly and damaging to the car.
As someone who loves tinkering with cars, I've found that the engine vibration in the Roewe 550 is mostly caused by several factors: First, ignition system failures, such as uneven spark plug gaps or burnt-out ignition coils; second, unstable fuel supply, like insufficient fuel pump pressure or stuck fuel injectors; air system issues such as throttle body dirt affecting the air-fuel ratio; or weakened and loose engine mount screws. If the vibration changes with engine speed, it might involve pulley misalignment or crankshaft sensor problems. The solution is quite simple—you can try replacing the spark plugs yourself to see if it helps; if there's no improvement, then check the fuel system and mount fastenings. Regular use of cleaning agents for maintenance can prevent carbon buildup and reduce the risk of vibration. Increased fuel consumption hurts the wallet, so quick fixes save time and ensure safety.
