What Causes Difficulty in Starting the Car but No Issues While Driving?
3 Answers
The reasons for difficulty in starting the car but no issues while driving are low car battery voltage; a malfunction in the fuel supply system; and insufficient spark plug ignition energy. Below is additional information: Specific manifestations: After turning the ignition switch, the engine, driven by the starter, runs for more than 5 seconds but still fails to start. The car battery is an essential part of the vehicle and can be categorized into traditional lead-acid batteries and maintenance-free batteries. Fuel supply system: The fuel supply system is a device used to supply combustible mixed gas. Due to differences in fuel types, the supply methods may vary. The spark plug, commonly known as the sparking plug, is a crucial component of the gasoline engine's ignition system. It introduces high-voltage electricity into the combustion chamber and causes it to jump across the electrode gap to generate a spark, thereby igniting the combustible mixed gas in the cylinder. Components of a spark plug: A spark plug mainly consists of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell, with the side electrode welded onto the shell.
My car has the same issue. It struggles to start but runs fine once it's going. It's most likely due to an aging battery with insufficient voltage to power the starter. Worn starter motor brushes can also cause sticking, especially noticeable during cold starts. If the spark plugs have been used for 50,000 to 60,000 kilometers, the increased gap reduces ignition efficiency. Excessive carbon buildup in the fuel injectors can cause poor fuel spray during the first cold start, or a fuel pump pressure leak may lead to insufficient fuel supply during startup. Additionally, a dirty crankshaft position sensor can interfere with the ignition signal. Start with the basics: first test the battery's lifespan, then check for any sensor error codes, and finally consider replacing the starter or cleaning the fuel system.
The car is hard to start but runs normally? I've encountered similar situations. Insufficient battery power is the most common cause, especially after prolonged parking. Next could be starter issues, such as lack of lubrication causing gear jamming or poor contact in the magnetic switch. Aging ignition coils leading to insufficient energy are also common. Excessive carbon buildup may absorb fuel, causing a lean mixture during cold starts. Another minor detail is overly thick engine oil, increasing cold start resistance. It's recommended to focus on checking battery voltage and lifespan, testing whether the starting current meets standards, and removing a spark plug to inspect combustion conditions. In winter, remember to preheat the ignition to allow the fuel pump to build pressure.
