What is the issue when a car requires a second ignition?

[BrooklynFitz]

When a car requires a second ignition, it is often due to poor fuel atomization in the cylinders combined with insufficient ignition energy, leading to a phenomenon called "flooding." This occurs when excessive fuel accumulates in the cylinders, exceeding the ignition limit concentration and preventing the engine from starting. Below are other reasons why a car might fail to start: 1. Carbon buildup in the engine: If the car idles roughly with slight shaking, cleaning the throttle body and fuel injectors may resolve the issue. 2. Weak spark plug ignition energy: If spark plugs are not replaced after their maintenance interval, their ignition energy diminishes, which can even lead to misfires in severe cases. 3. Insufficient fuel pressure in the low-pressure system: Low fuel pressure in the low-pressure fuel circuit directly causes the engine to require a second ignition. Specific components to check include the fuel pressure regulator, fuel pump, fuel filter, and internal fuel lines.