What Causes a Car to Fail to Start?

[Brady]

The reasons why a car fails to start are as follows: Damaged spark plugs: Spark plugs are crucial to the car's ignition system, and the ignition system is vital for the engine to work. Therefore, damaged spark plugs can prevent the car from starting successfully. Weak battery: The starter may begin to turn but lacks sufficient power, eventually making only a clicking sound without turning. This is due to a weak battery that cannot provide enough power to start the car. In winter, low temperatures and forgotten electrical devices can lead to the vehicle's inability to start, especially after prolonged short-distance, low-speed usage in cold weather, which can cause the battery voltage to drop below the rated value, preventing normal operation. Blocked fuel flow: No oil pressure in the engine's fuel supply line, a situation often occurring on extremely cold mornings, is caused by long-term dirt accumulation in the fuel lines. At very low temperatures, water and debris can mix, blocking the fuel lines and resulting in a failure to start.