What Are the Reasons for Slow Acceleration When Refueling a Car?
2 Answers
Car acceleration slow when refueling reasons are as follows: 1. Clutch slipping: Clutch slipping mainly manifests as when the car accelerates during driving, the speed cannot increase with the rise of engine speed, and the engine's power cannot be fully transmitted to the driving wheels, resulting in weak driving. 2. Engine system failure: The power source is the combustion of fuel, the engine is responsible for providing fuel and converting chemical energy into mechanical energy, so when the car has weak acceleration and slow speed, the engine system should also be a key point for inspection. 3. Oil circuit problems: If the engine oil is insufficient for a long time, the lighter ones will have insufficient power and increased fuel consumption; the heavier ones will cause the piston to hit its door, causing mechanical damage to related connecting parts. In addition, fuel pump failure and fuel filter blockage will also cause the engine power to drop.
I've seen this issue of slow acceleration when refueling quite a few times as a mechanic, and it's mostly related to the engine's fuel system. When the fuel filter is clogged, gasoline flow becomes restricted, leading to insufficient fuel injection from the injectors, resulting in poor power response when stepping on the gas. Additionally, an aging fuel pump with inadequate pressure can cause sluggish fuel delivery. A dirty air filter can also contribute to the problem by reducing air intake and making the engine work less efficiently, thus hindering acceleration. It's recommended to first check the air filter and fuel filter for cleanliness yourself. If they're covered in dust or contaminants, try replacing them with new ones. If that doesn't help, test whether the fuel pressure is normal to avoid power loss caused by carbon buildup or clogged injectors. In short, timely maintenance of the fuel system can resolve most acceleration issues—don't wait until it affects driving safety to make repairs.