Why does the accelerator suddenly become hard to press?

[SanColeman]

The sudden stiffness of the accelerator pedal can be caused by carbon buildup in areas such as the engine and throttle body. Excessive engine carbon buildup: If there is a significant amount of carbon buildup in the engine over a short period, it can lead to higher fuel consumption in the car. This situation is likely due to the use of substandard fuel. The solution is to add a certain amount of cleaning agent when refueling. If the effect is not noticeable, it indicates a substantial amount of carbon buildup inside the engine. In such cases, it is best to leave it to a 4S shop or repair shop, where technicians can clean the carbon deposits inside the engine. Excessive throttle body carbon buildup: Many malfunctions are caused by carbon buildup, and some vehicles may experience jerking sensations related to carbon deposits. It is recommended to regularly clean carbon deposits to prevent such issues.