What are the reasons for a car having power and fuel but not starting and making no sound?
1 Answers
Car having power and fuel but not starting and making no sound is due to severe wear of the starter carbon brushes, malfunction of the starter control mechanism, or damage to the starter clutch. The specific reasons for a car having power and fuel but not starting and making no sound are as follows: Severe wear of the starter carbon brushes: The symptom during startup is weak starting, and the crankshaft can be seen turning very slowly through the belt and pulley. When the wear is extremely severe, the starter cannot drive the crankshaft to rotate at all, producing only the sound of electric current. Malfunction of the starter control mechanism: In addition to the starter motor, the starter assembly includes an electromagnetic control mechanism. When the control mechanism malfunctions, the small pinion gear cannot engage with the large ring gear, preventing the engine from starting. The symptom is turning the key to start, hearing only the sound of the starter spinning at high speed without hearing the sound of the engine crankshaft flywheel operating. Damage to the starter clutch: Generally, the starter operates at a speed of 120r/min, while the engine idles at around 900r/min after starting. The function of the clutch is to prevent the engine from driving the starter in reverse after starting, which could burn out the starter, if the driver fails to release the key in time, keeping the small pinion gear and large ring gear engaged.
