Why does a Volvo suddenly fail to start?

[LaPatrick]

Volvo suddenly failing to start is due to the absence of oil pressure in the engine fuel supply line. This situation often occurs on particularly cold mornings and is caused by long-term contamination of the fuel line. Below is an introduction to the reasons why a car may fail to start: Related to engine temperature: In the morning, when the engine temperature is low, the viscosity of the lubricating oil increases, fuel volatility deteriorates, and the battery's working capacity weakens, leading to difficulty in starting. Insufficient battery power: If the output voltage in the morning is less than 12 volts and the starter motor's speed cannot be reached, check whether the battery electrolyte needs to be replenished. In such cases, you can first try jump-starting the car to test whether the battery can be charged. If it still doesn't work, the battery may need to be replaced. Therefore, to reduce battery consumption, avoid using devices such as CD players, cigarette lighters, and chargers when the car is not running.