What are the reasons why the car always has no power and cannot start?
2 Answers
The reasons why the car always has no power and cannot start may include abnormal gear position, carbon buildup in the throttle, insufficient engine oil, etc. Below is a detailed introduction about the car throttle: Overview: The throttle is a controllable valve that regulates the air entering the engine. After the air enters the intake pipe, it mixes with gasoline to form a combustible mixture, which then burns to generate power. It connects the air filter at the top and the engine block at the bottom, and is referred to as the throat of the car engine. Classification: Throttles are divided into two types: traditional cable-operated and electronic throttle. In traditional engines, the throttle control mechanism works through a cable (soft steel wire) or linkage rod, with one end connected to the accelerator pedal and the other to the throttle linkage plate. The electronic throttle primarily uses a throttle position sensor to control the throttle opening angle based on the engine's required energy, thereby adjusting the amount of air intake.
As a seasoned driver with nearly a decade of experience, I've encountered this situation multiple times where the car won't start due to a dead battery. Common causes include battery aging—these typically last only three to five years, as internal resistance increases over time, reducing charge retention. High summer temperatures accelerate electrolyte evaporation, making failure more likely. Alternator issues are another culprit; after driving, the battery should recharge, but a loose belt or faulty voltage regulator can prevent proper charging, leaving you stranded at the next startup. Parasitic drain is a sneaky problem—think trunk lights left ajar or aftermarket audio systems quietly draining power. Once, my oversight drained the battery overnight. Starter motor internal shorts can also sap power. Environmental factors like winter cold halve battery capacity and double starting difficulty. My advice: regularly test battery voltage with a multimeter—replace if below 12V, ensure all lights are off before parking, avoid insufficient charging from short trips, and use a maintainer to prolong lifespan.
