Where is the red flag H9 throttle? How often does the red flag H9 throttle need to be cleaned?

The throttle position of 2022 Red Flag H9 is behind the engine air intake, behind the engine air filter and in front of the intake manifold, as shown in the following figure.

Wiper water

storage battery

throttle valve

λ sensor

Brake oil pot

Fuse box

Air filter

8 Coolant tank

How often does the red flag H9 throttle valve need to be cleaned?

The H9 throttle of Hongqi is cleaned every 20,000-30,000 kilometers. If it is not too dirty, you can clean the throttle directly with cleaning agent without disassembling the throttle. But if the throttle is removed, it will be cleaner. The cleaning steps for removing the throttle valve are as follows:

1. Find the throttle valve first, which is behind the air inlet and connected to the air filter;

2. Remove the hose connecting the throttle valve and the air cleaner first, and then remove the air cleaner assembly;

3. Then remove the throttle cable, unscrew the fixing bolt and remove the throttle;

4. Use special cleaning agent or carburetor cleaning agent and spray it on the throttle. After the carbon deposit is completely dissolved by organic solvent, it is dried for 1-2 minutes.

In addition to the above methods, there is also a cleaning method without disassembling the throttle, which only needs to spray cleaning agent into the throttle when the engine is running. The practice of many 4S shops and maintenance points is to blow the throttle and spray cleaning agent into the throttle. At this time, the vehicle will emit white smoke, mainly because the cleaned dirt is strongly ignited by the suction cylinder and then discharged. This cleaning method is very harmful to the car, so it is generally recommended to remove the throttle for cleaning, which is better and healthier for the car.