What are the reasons why the car throttle cannot be increased?

[ZoeLee]

The reasons why the car throttle cannot be increased are: 1. Fuel line blockage; 2. Exhaust system blockage; 3. Excessive carbon buildup in the throttle. The throttle, also known as the air valve or throttle valve, refers to the control device that regulates engine power. The throttle position is manipulated by the driver in the cockpit via the throttle lever, transmitted through control system components such as rods, rocker arms, torque tubes, cables, pulleys, and sector gears to the carburetor or fuel regulator on the engine. The car's throttle pedal does not directly control the fuel injection volume but rather the throttle opening. When the throttle pedal is pressed, the throttle opening increases, allowing more air to enter the engine, which in turn prompts the fuel injection system to inject more fuel.

[BryceLynn]

As a regular driver, I get anxious when the throttle doesn't respond. The most common issue is a problem with the fuel system, such as a malfunctioning fuel pump not delivering enough fuel or a clogged fuel filter preventing the engine from getting sufficient fuel. Air supply is also crucial; a dirty air filter filled with dust can restrict airflow, making the engine feel weak. Ignition system issues like worn spark plugs or faulty ignition coils can also cause misfires, leading to poor acceleration. Additionally, a faulty throttle position sensor or electronic control module can affect the computer's ability to precisely control speed. In such cases, don't push it—head to a repair shop immediately for inspection and part replacement to avoid accidents, especially at high speeds. Regular maintenance can significantly reduce these frustrations.

[EliAnn]

I enjoy doing my own car maintenance, and the issue of unresponsive throttle is worth investigating. First, check fuel-related problems: common issues include an aging fuel pump with insufficient pressure, fuel line leaks, or a clogged fuel filter. The ignition system should not be overlooked: spark plugs with excessive gaps or severe carbon buildup may fail to ignite, and loose ignition wires can also affect acceleration. A dirty throttle body with excessive carbon buildup obstructing airflow is a classic problem. Modern cars are highly electronic, so faulty sensors like the throttle position sensor or incorrect ECU signals are often the culprits. It's recommended to use an OBD scanner to read fault codes for accurate diagnosis before replacing parts. Regularly cleaning the throttle body and changing the engine oil can prevent such issues, ensuring smooth and safe driving.

[OBraxton]

As a beginner learning to drive, it's really nerve-wracking when the accelerator doesn't respond. Usually, it's because the air filter is too dirty and blocks the air intake, making the engine struggle to accelerate. Sometimes, a faulty fuel pump or clogged fuel filter prevents fuel from reaching the engine, and replacing the filter can solve the problem. Other issues like faulty spark plugs or a stuck throttle cable can also cause accelerator failure. Try cleaning or replacing the filter first, but if that doesn't work, visit a mechanic to avoid disrupting daily driving. Just remember to use quality fuel and stick to regular maintenance.