What Are the Reasons Why a Car Suddenly Can't Accelerate While Driving?

1 Answers
DeHaven
07/29/25 11:05pm
If a car suddenly can't accelerate while driving, it may be due to dirty fuel, clogged fuel injectors, a faulty fuel pressure regulator, or poor performance of the electric fuel pump. Below are some precautions to take when refueling a car: 1. Refuel in the morning or evening: Gasoline is charged by volume rather than weight, and it expands with heat and contracts with cold. Refueling in the morning or evening when temperatures are relatively lower allows the same volume of gasoline to have a higher mass, saving a significant amount. For example, a 15-degree temperature difference between morning and evening can result in a difference of 0.62 liters. Additionally, the risk of danger is lower at lower temperatures. 2. Avoid filling the tank completely: When driving in the city, there's no need to fill the tank to the brim. A full tank increases the engine's load. It's best not to exceed two-thirds of the tank's capacity, as overfilling can cause overflow. Gasoline may flow into the intake manifold through the pipes, leading to spark plug "flooding," which can cause the car to stall when refueling. In severe cases, the car may fail to start normally, and gasoline may even leak from the carbon canister, posing a significant fire hazard if exposed to open flames. 3. Don't wait until the tank is empty to refuel: The fuel pump in the tank relies on gasoline for cooling. If the fuel level is too low and doesn't cover the pump, prolonged operation under such conditions may reduce the fuel pump's lifespan. This is less of an issue in winter but poses a higher risk in the hotter summer months. Additionally, if the fuel level is too low, the pump may draw sediment from the bottom of the tank, which can clog the pump or block the fuel lines.
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