What Causes the Throttle to Be Hard to Press Down?

[LeLucy]

Throttle being hard to press down is generally caused by carbon buildup in the engine's throttle body. You can inspect the throttle body and idle speed control valve, and after cleaning them, try operating it again. The throttle, also known as the "air valve" or "throttle valve," refers to the control device that regulates the engine's power (thrust). In piston-type aircraft engines, the throttle controls the opening of the carburetor's throttle valve to regulate the cylinder's filling volume. Relevant information about idle speed is as follows: 1. Introduction: Idle speed is an operating condition of a car, referring to the engine running in neutral gear. The engine speed during idle is called the idle speed. The idle speed can be adjusted by modifying the size of the air valve, among other methods. Idle speed means the engine is "producing power without doing work." 2. Driving Idle: During gear shifting, if the accelerator pedal is not pressed or is released while driving, maintaining the minimum opening of the throttle valve, the engine speed matches the parking idle speed. This state is referred to as driving idle.