Ask about the oil leakage from the throttle.

The inside of the engine is very clean! There are few places where the turbine engine leaks oil. The most common ones are valve cover, oil grid base, oil leakage at throttle, tensioner and turbine oil return pipe. These things can replace the valve cover or cushion, the oil grid seat can replace the sealing ring, the turbine oil return pipe and the tensioner, and the throttle valve can be replaced directly here.