What Causes Weak Ignition in Cars?

[FranciscoAnn]

Here are the reasons for weak car ignition: 1. Pay attention to the battery: Generally, green indicates normal power, white indicates the need for charging maintenance, and red indicates a dead battery (some may use green for qualified, black for low power, and white for battery damage requiring replacement). The lifespan of a battery is typically around two years. If the battery power is found to be low, it should be replaced promptly. 2. Pay attention to the throttle valve body and idle valve: Carbon buildup in the throttle valve body and idle valve can cause difficulty in starting. For vehicles with an idle valve, lightly pressing the accelerator pedal before starting can help ignite the engine, but releasing the pedal may cause immediate stalling. Therefore, it's best to promptly visit a repair shop for cleaning and inspection. Additionally, during maintenance, it's essential to frequently replace the air filter. In northern areas with more dust, the air filter should be replaced every 10,000 kilometers, and even more frequently on sandy or dusty roads. 3. Fuel pressure: To ensure normal engine startup, the residual fuel pressure in the fuel system after the engine is turned off should not be below 2.5–3.5 kg/cm². Otherwise, insufficient pressure will prevent the fuel injector from spraying enough fuel for startup. Repeatedly turning the ignition switch can restore the fuel pressure to normal, making startup much easier. However, it's best to have a professional mechanic inspect the fuel system to rule out any faults. 4. Lubricant quality: As winter approaches, it's important to replace all lubricants, including engine oil, transmission oil, and power steering fluid, as ordinary lubricants become more viscous and less fluid in cold weather, increasing friction resistance and making cold starts difficult. Choosing a slightly less viscous oil can reduce mechanical wear and protect the engine.