What are the reasons why a large vehicle cannot accelerate?

2 Answers
DelZachary
09/07/25 4:33am
The reasons why a car cannot accelerate include clogged fuel lines, blocked exhaust systems, and excessive carbon buildup in the throttle. Below are some related expanded contents: Function of the throttle: By controlling the amount of pedal depression, the engine speed can be controlled; the throttle regulates the carburetor to determine the engine's output power. Working principle of the throttle: When the accelerator pedal is pressed, it directly controls the throttle. The throttle opening increases, allowing more air to enter the engine. At this point, the ECU commands the fuel injection system to inject more fuel, causing the engine speed to rise and the car to accelerate. Solutions for abnormal noises when accelerating: Replace the engine oil; clean the engine carbon deposits; replace the spark plugs; conduct a comprehensive inspection and maintenance of the vehicle.
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VanRyder
09/19/25 3:56am
I've been driving on the road for decades, and the issue of large vehicles not accelerating properly is quite common. Possible causes include problems with the fuel system, such as a clogged fuel filter or dirty fuel injectors, leading to insufficient fuel supply; or faults in the air system, like excessive dust accumulation in the air filter, restricting air intake; sometimes, it could be a damaged throttle pedal sensor, preventing signals from reaching the vehicle's control computer. It's advisable to regularly replace the filter elements and fuel pump components to avoid encountering such dangerous situations during high-speed driving. Additionally, if the vehicle suddenly loses power, don't force it to continue. Immediately turn on the hazard lights and pull over to inspect. Safety is always the top priority—after all, life is irreplaceable, while cars can be repaired but lives cannot.
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