The Chevrolet Cruze on 18 didn't clean the throttle.

1. First remove the air line on the throttle valve, and then remove the whole throttle valve. The side of the throttle near the combustion chamber is generally dirty, and the black carbon deposit mark is the main part that needs cleaning.

2. Secondly, spray the cleaning agent to the position with more carbon deposits on the throttle, and wait for about 5 ~ 10 minutes to dissolve the carbon deposits.

3. Finally, after seeing that the stain on the throttle has completely dissolved, you can clean the detergent inside the throttle with a clean towel.