Is it necessary to clean the oil throttle?

The oil circuit needs cleaning. Cleaning method of oil throttle: 1. Remove the upper engine cover and unplug the intake pipe connecting the throttle body. There will be a lot of mud here. 2. Disconnect the throttle pipe and three groups of pipes connecting the throttle position sensor, idle motor and intake manifold absolute pressure sensor. After it is removed, it can be seen that mud is also stuck on the telescopic rod head of the idle motor. 3. Please use carburetor cleaner to clean the sludge in the throttle body. Especially around the throttle, too much sludge will block the valve clearance in the throttle valve body. Just wash the dirty place and put it back.