What is the reason why the accelerator can't come down when China V5 shifts gears?

1. China V5 shifts gears, and the throttle won't come down. It may be that the throttle spring is compressed for a long time, the tension is small, the throttle opening becomes larger, and the oil supply increases, which leads to the slow return of the speed pointer.

2. China V5 shifted gears, and the accelerator couldn't come down. It is also possible that there is something wrong with the accessories or the air inlet is leaking. If it is just after maintenance, it is not a fault that the engine speed drops slowly.