Chery Linwei X5 accelerator pedal sometimes can't be filled with oil. Add an accelerator, and there will be an accelerator. What is this?

Chery Linwei X5 sometimes can't fill the accelerator pedal. Add an accelerator, and there will be an accelerator. Generally speaking, the reason may be that the oil circuit is blocked. Check whether the steam filter is blocked, whether the pump pressure of the gasoline pump is sufficient, and whether the fuel nozzle is blocked. The exhaust system is blocked. Check whether the three-way catalyst and the whole exhaust pipe are blocked. It may also be that there is too much carbon deposit in the throttle, and the idle position sensor and air flowmeter are damaged.