What Causes the Vibration During Acceleration at Around 50 km/h in the Boyue?
2 Answers
Possible causes of engine vibration include: A dirty air filter, broken high-voltage wires, worn-out spark plugs, abnormal water temperature, clogged fuel injectors, carbon deposits, oil sludge blockages, and other factors may lead to vibration. Here is a related introduction: Excessive Carbon Deposits: When there is excessive carbon buildup inside the engine, the gasoline sprayed by the cold-start injector can be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making it difficult to start. Under such conditions, the engine can only start easily once the carbon deposits have absorbed enough gasoline to become saturated. After starting, the gasoline adsorbed on the carbon deposits is then drawn into the combustion chamber by the engine's vacuum suction, causing the air-fuel mixture to become too rich. This fluctuation between lean and rich mixtures leads to unstable idle speed and vibration after a cold start.
Oh, my Boyue also shook once when accelerating to around 50 km/h, which gave me a scare. I figured it might be a tire issue, like improper tire balance. After prolonged use, uneven tire wear can cause the car body to wobble during turns or acceleration. Also, if the wheel rim gets deformed from an impact, it can lead to imbalance. I went to the repair shop for a wheel balance, and the technician found it was a rear wheel issue—adjusted it and it was fine. Usually, it's important to avoid driving on rough roads too often and to regularly check tire wear and safety conditions. Remember, don’t delay fixing such shaking; handle it promptly to avoid damaging the suspension system and dangerous driving. If the problem persists, check if the drive shaft or engine mounts are loose.
