What Causes a Car to Start Intermittently?

[MacWillow]

The reasons why a car starts intermittently are as follows: 1. Weak battery: When the car battery is weak, the car may fail to start. There are many reasons for a weak car battery, such as lack of water in the battery or battery malfunction. 2. Low temperature: In winter, cold weather often causes cars to have difficulty starting. This is because, in low-temperature environments, the viscosity and rotation speed of the car's engine oil decrease, leading to reduced ignition energy from the battery and decreased molecular activity. As a result, flammable gases cannot form, making it hard to start the car. 3. Carbon buildup in the car: Carbon buildup in the car's engine can lead to many issues, the most common being difficulty starting the car. There are various causes of engine carbon buildup, such as excessive water in gasoline, poor fuel quality, and poor sealing of the valve seat rings.