Clean throttle and oil circuit.

Cleaning the oil circuit and throttle valve depends on the specific situation. Generally, the throttle valve is cleaned every 654.38+0000 kilometers, and the oil circuit is cleaned every 40,000 to 50,000 kilometers. The cleaning procedure of the throttle valve is: 1. Remove the upper cover of the engine and pull out the intake pipe connected with the throttle body, there will be a lot of sludge here; 2. Remove the throttle cable, and then unplug three sets of lines connecting the throttle position sensor, the idle motor and the intake manifold absolute pressure sensor. After unplugging, you will see that sludge is also attached to the telescopic rod head of the idle motor; 3. Clean the sludge in the throttle body with carburetor cleaner, especially around the throttle. Excessive sludge will fill the gap of the valve in the throttle body. Clean up all the dirty places carefully before assembling them back.