What Are the Reasons for a Car Losing Power After Ignition?
1 Answers
Consider the following reasons if your car loses power after ignition: 1. Check the battery: Most modern cars use maintenance-free batteries, but it's still necessary to periodically check the power level indicator. Generally, green indicates normal power, white means it needs charging or maintenance, and red signifies the battery is dead (some indicators may show green for good condition, black for low power, and white for battery damage requiring replacement). The typical lifespan of a battery is around two years. If the battery power is found to be low, it should be replaced promptly. 2. Inspect the throttle body and idle valve: Carbon buildup in the throttle body or idle valve can cause difficulty starting. For vehicles with an idle valve, lightly pressing the accelerator while starting may help, but the engine may stall immediately after releasing the pedal. Therefore, it's best to have them cleaned and inspected at a repair shop. Additionally, during maintenance, regularly replace the air filter. In northern areas with dusty air, the air filter should be replaced every 10,000 kilometers, or even sooner if driving 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 drop below 2.5–3.5 kg/cm². Otherwise, insufficient pressure will prevent the fuel injectors from delivering enough fuel for startup. Repeatedly turning the ignition switch can help restore normal fuel pressure, making it easier to start. However, it's advisable to have a professional mechanic inspect the fuel system to diagnose and fix any issues. 4. Lubricant quality: In winter, it's essential to change all lubricants, including engine oil, transmission fluid, and power steering fluid. Regular lubricants thicken in cold weather, reducing flow and increasing friction resistance, making cold starts difficult. Opt for lower-viscosity oil to reduce mechanical wear and protect the engine.
