What are the reasons for difficulty in starting a car?

[Betty]

The reasons for difficulty in starting a car are as follows: 1. If the engine has been difficult to start for a long time, it is likely due to issues in the ignition system or fuel supply system. For example, faults in the ignition system such as spark plugs, high-voltage wires, ignition coils, or improper adjustment of the carburetor in the fuel supply system. 2. The engine's starting performance gradually worsens, and the starting time becomes increasingly longer. 3. If the engine's starting performance chronically deteriorates, the cause is mostly due to poor battery performance. In such cars, when turning the ignition switch to start the engine, the engine speed momentarily increases, but then the starter appears to lack power, causing the engine speed to drop extremely low, requiring a long time to start the engine.