What Causes Weak Ignition in Cars?
1 Answers
Weak car ignition can be attributed to the following reasons: 1. Pay attention to the battery: Most modern cars use maintenance-free batteries, which require regular checks on the power display: green indicates normal power, white means charging and maintenance are needed, and red indicates no power. The battery lifespan is generally about two years. If the battery power is found to be low, it should be replaced promptly. 2. Check the throttle valve body and idle valve: Carbon buildup can cause the throttle valve body and idle valve to stick, leading to difficult starts. For vehicles with an idle valve, lightly pressing the accelerator before starting can help, but releasing the pedal may cause the engine to stall immediately. It’s best to take the car to a repair shop for cleaning and inspection. 3. Fuel pressure: To ensure normal engine startup, the residual fuel pressure in the fuel system after the engine shuts off should not be below 2.5–3.5 kg/cm². Otherwise, insufficient pressure will prevent the injectors from delivering enough fuel for startup. 4. Lubricant quality: As winter approaches, it’s essential to replace various lubricants, including engine oil, transmission fluid, and power steering fluid. Regular lubricants thicken in winter, reducing fluidity and increasing friction resistance during component movement, making cold starts difficult. Opt for slightly lower-viscosity oil to reduce mechanical wear and protect the engine.
