What Causes a Car to Stall Seconds After a Cold Start?

[VanPenelope]

The reasons for a car stalling seconds after a cold start include stalling caused by carbon deposits, ignition system failure, and power supply issues. Stalling caused by carbon deposits: Carbon deposits usually accumulate in the throttle valve, spark plugs, cylinders, fuel lines, intake ducts, etc. They are a coking-like substance produced when fuel is exposed to high temperatures. Solution: General physical methods are ineffective in removing them; specialized cleaning agents are required for cleaning. Ignition system failure: Common faults include carbon deposits on spark plugs and insufficient ignition voltage. Solution: The former can be addressed by using a combination of physical and chemical methods to remove carbon deposits, while the latter can be resolved by replacing the spark plugs to solve the issue of insufficient voltage. Power supply issues: If the battery is severely depleted, it can make the engine difficult to start or even prevent it from starting altogether. Typically, a battery's lifespan is about 4 years. Solution: A nearly depleted battery can be replaced; repairs are generally not recommended as repaired batteries have a short lifespan and are less reliable.