What Causes the Volkswagen Magotan to Shake During Startup?
1 Answers
The main reasons for severe shaking during the startup of a Volkswagen Magotan include severe carbon buildup in the throttle body, fuel injectors, and intake manifold; significant carbon deposits inside the engine; ignition system failure; unstable oil pressure; and aging engine components. When carbon buildup is severe, it is essential to promptly inspect and clean it. Developing a habit of regular carbon cleaning or allowing the carbon deposits to saturate with absorbed gasoline is advisable. The most common cause of car shaking is a dirty throttle body or excessive carbon buildup in the fuel injectors. When there is too much carbon 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. This causes the engine's combustible mixture to fluctuate between lean and rich, leading to idle shaking after a cold start. The lower the temperature, the more fuel is required for a cold start, so severe carbon buildup can significantly affect startup performance. If the ignition system malfunctions, it is necessary to promptly visit a repair shop for inspection and repair. Insufficient engine temperature, inadequate fuel and lubricant temperatures, and prolonged vehicle use can cause the spark plug's ignition gap to widen, reducing ignition energy and affecting engine performance, leading to shaking. When oil pressure is unstable, it is essential to visit a 4S shop to check the fuel supply pressure and the intake pressure sensor, among other components. If the fuel pump's supply pressure is abnormal or the intake pressure sensor readings are incorrect, corresponding repairs should be carried out. Aging engine components should be replaced, and it is important to develop a habit of regular inspections and timely replacements. Aging engine components are often related to worn engine mounts. Engine mounts act as the engine's shock absorption system, absorbing minor vibrations during operation. If they fail, the vibrations can transfer to the steering wheel and the cabin, causing shaking during idle.
