What is the fault analysis for engine failure to start?

[DelKevin]

Vehicle failure to start is a relatively common issue. The fault analysis is as follows: 1. First, check the fuel gauge to see if there is fuel: Many new drivers may forget to refuel due to lack of experience, and without gasoline, the vehicle naturally cannot start. 2. When there is very little gasoline in the car: Check if the car is parked on an uneven surface. If the ground slope is significant, the fuel in the tank may concentrate on one side, sometimes preventing normal fuel supply and causing failure to start. 3. Check if the vehicle battery is low or dead: If you can only hear the starter sound when trying to start the car, it is highly likely that the battery is too weak to start. In this case, when the key is returned to its original position, the vehicle might start due to the engine's slowing operation. 4. Check if the electrical circuit is functioning properly. 5. Check if the fuel pump is working normally: Generally, when starting the vehicle, you can hear a slight sound from the fuel pump relay, which automatically stops after two seconds.