What are the reasons for having power in the battery but failing to start the engine?

[StEvelyn]

The reasons for having power in the battery but failing to start the engine are: the battery voltage is insufficient to start the engine. Prolonged use of the battery can easily lead to aging, and if the battery voltage is not enough to power the starter, the engine cannot be started. When the engine fails to start, it is necessary to determine whether it is due to insufficient battery voltage, a faulty starter, or other reasons. Causes of vehicle failure to start: 1. The gear is in D (Drive) position, which is a protective mechanism of the car to prevent sudden movement after ignition; 2. Damage to the fuel pump prevents it from pumping fuel; 3. Severe carbon buildup in the throttle body leads to insufficient throttle opening, preventing the combustible mixture from entering the cylinder for combustion, resulting in failure to start. Therefore, it is important to perform regular maintenance during normal vehicle use to minimize the occurrence of starting failures. Aging parts should be replaced promptly.