How to judge whether the throttle is dirty and how often should the throttle be cleaned?

Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be burned to do work. So, how to judge that the throttle is dirty?

First of all, the most obvious point is:

1. The idle speed is unstable, and the car will shake obviously if it doesn't go on fire.

It is not easy to make a fire. It used to be possible to strike a fire once, but now it may be necessary to strike twice.

3. Accelerated response is slow. When you step on the accelerator, you won't accelerate immediately. It takes a second or two to accelerate.

4. When driving, let go of the throttle completely, and the car will obviously squat and tremble.

If it is too dirty, some cars will light up the engine fault light.

After these phenomena, the first thing to consider is that the throttle is dirty, and then check to see if there are any other faults. This requires cleaning the throttle. There is no fixed mileage requirement for cleaning the throttle. If the road environment is poor, you often run some dirt roads or roads with many construction projects, and often run sections with serious traffic jams in urban areas, the throttle will get dirty faster and need to be cleaned earlier.

The average family car, about 20 thousand to 30 thousand kilometers, the throttle will get dirty and need to be cleaned once. Using computer to detect the throttle opening can detect whether the throttle is dirty or not. In fact, you can see it with the naked eye. You need to remove the air inlet hose so that you can see it clearly. It is clear at a glance whether it is dirty or not and whether it needs cleaning. So it's best to use a computer to do a test or have a look. However, this nozzle and air inlet are invisible, about 30 thousand to 40 thousand kilometers, and should be cleaned.