What are the reasons for the car not accelerating when pressing the throttle?

[Gavin]

There are several reasons why a car may not accelerate when pressing the throttle: 1. Fuel line blockage. 2. Exhaust system blockage. 3. Excessive carbon buildup in the throttle. The functions of the throttle are as follows: 1. By controlling the amount of pedal pressure, the engine speed can be regulated. 2. The throttle controls the carburetor to determine the engine's output power. Below is an explanation of how the throttle works: When the throttle pedal is pressed, it directly controls the throttle valve, causing the throttle opening to increase. This allows more air to enter the engine, prompting the ECU to command the fuel injection system to inject more fuel. As a result, the engine speed increases, and the car accelerates.