How do you adjust the mixing ratio of the carburetor of the scooter?

Adjust the scooter carburetor mix ratio by adjusting the valve oil needle, the specific operation is as follows.

Here's how.

When the color of the spark plug is whitish.

It means that the mixture is too thin, and the oil injection should be lowered by one grid and the mixing ratio should be increased. The color of the spark plug is black, indicating that the mixture is too thick, and the oil needle should be adjusted one level higher to dilute the mixture. Then it depends on the color of the spark plug, it should be about 5 kilometers at a speed of 4000 to 6000 rpm 40-60 kilometers per hour.

When the kilometer is up, immediately hang neutral, or grab the clutch, turn off the engine and stop to check. (Note that every time you adjust the height of the throttle valve oil needle, if the idle speed is unstable, you should adjust the idle speed and the mixture screw from the beginning).

When the fuel consumption is too high.

The throttle valve oil needle should be adjusted, not the mixing ratio screw. Up one or two can effectively control fuel consumption, but there will be insufficient power, slow acceleration, high-speed and other phenomena, on my own experience spark plug burned brick red low-speed power is really general, for the city driving in the car low-speed acceleration is too important, so my car is tuned to dark red, so that there will be abundant power output at low and high speeds, and then in fact, as long as the spark plug burns well, there is no need to care too much about fuel consumption, The superdilute mixture will cause the combustion rate of the engine fuel to be reduced, the engine will overheat, and the power output will be reduced.

When the idle speed is unstable.

The gas mixture screws and idle screws should be adjusted. The method is: first tighten the idle screw, to stabilize and not extinguish, and then adjust the mixture screw, clockwise to thick, counterclockwise to dilute, left and right rotation, pay attention to observe the idle speed until the highest point, and then adjust the idle screw to about 1500, and then rotate the mixture screw in a small range to the highest point of idle speed, and then adjust the idle screw back to about 1500 rpm, and so on several times, until the idle speed of the left and right rotating mixture screw no longer changes.

Note: The conditioning mixture should be adjusted after 3-5 minutes of warm-up.

The power difference is high speed, and it is all for a while.

It is obvious that the mixture is too thin and the height of the oil needle should be adjusted according to method 1.

Difficult to start, when black smoke is emitted after starting.

It is a sign that the mixture is too thick, and the oil needle should be adjusted by one level, and the idle mixture should be carefully adjusted according to method 3.

Tightening clockwise is thinning, and counterclockwise withdrawal is thickening.

The fuel economy of hybrid vehicles is high, and the driving performance is superior, the engine of hybrid vehicles uses fuel, and when starting and accelerating, due to the assistance of electric motors, it can reduce fuel consumption, simply put, compared with cars of the same size, fuel costs are lower.

1. First check the tight connection of the connectors related to the carburetor to ensure that the carburetor suction is normal and there is no air leakage or suction blockage.

2. Rotate the carburetor mixing ratio screw clockwise to the end, and then rotate the circle counterclockwise.

3. Start the engine and let the engine preheat for 10 minutes to make the engine reach the normal working temperature.

4. Adjust the idle adjustment screw of the carburetor so that the engine speed is the lowest and can be kept without stalling.

5. Repeatedly adjust the carburetor mixing ratio screws left and right to make the engine speed reach the highest. In this process, some friends will find that after the mixing ratio screw is adjusted to a certain position, and then rotate the mixing ratio screw in the counterclockwise direction, the idle speed will not change, and the mixing ratio screw can stay at the position when the idle speed is just adjusted to the maximum.

6. Repeat the operation repeatedly to make the engine idle stable.

7. Rotate the throttle handle rapidly, refuel violently, and then release the throttle, in this process, observe whether the engine acceleration and deceleration are stable, if it is stable, the adjustment is successful, if it is not stable, repeat the operation of 4 to 6 steps until the engine acceleration and deceleration are stable.

8. When the engine is idling, it should be kept for 5 minutes without stalling, after the idle speed is adjusted, some vehicles may idle very low, at this time, the idle speed should be slightly higher, keep it at about 1000-1500 rpm, because the idle speed is too low, the engine may stall when the accelerator pedal is idle when the high-speed driving is loose, the reason is that the air pressure of the air inlet is reduced at high speed, which affects the gasoline of the carburetor idle hole.

9. In the process of idle speed adjustment, if the exhaust pipe has the phenomenon of discharging the gun during the emergency refueling, the mixture is generally too thick, and the carburetor mixing ratio screw can be rotated counterclockwise. After the carburetor is adjusted, you can carry out a road test of about one kilometer, after the road test is completed, remove the spark plug, observe the color of the ceramic under the center electrode of the spark plug, if it is brick red, it is normal, if it is white, the mixture is thin, if it is black, the mixture is thick.

There is a screw on the carburetor to adjust the idle speed mixture, and after the motorcycle heats up for 3-5 minutes, slowly adjust the screw to find the fastest speed, and adjust it.

When adjusting, the speed change is not obvious, you can first adjust to one direction to find the point where the speed decreases significantly, and then adjust to the other direction to find the point where the speed decreases significantly, and take the middle position of the two points.

It's not the same, like the old-fashioned is clockwise twisted is thick, and now 125 is mostly counterclockwise twisted is thick, no matter which way there is a good way. Hit the car, warm up the car for 10 minutes, twist the idle screw clockwise to make the idle speed slightly higher, twist the mixture screw counterclockwise, if the speed rises, twist the idle screw to let it down, if it falls, twist the mixture screw clockwise to let it rise, and then adjust the idle screw, let it drop to about 1500 rpm. In short, adjust the up and down until the speed of the car reaches the maximum speed by tightening the gas mixture screw, and then adjust the idle speed screw to let it drop to 1500 rpm.

The method of adjusting the mixing ratio of the carburetor: 1. First of all, the carburetor should be able to idle, most of the scooters have an electronic enrichment valve, and the idle speed is very high at the beginning, and the electronic enrichment valve works automatically;

2. After one or two minutes of ignition, the mixing ratio will not be adjusted well, the idle speed will be unstable, one will be higher and the lower speed will be low, and even the ignition will be turned off, most of the solutions are to adjust the idle speed high, and the mixing ratio will not appear at all, and the idle speed can be stable and not extinguished with a very low idle speed;

3. The adjustment is very simple, people who don't know anything will refer to the key adjustment, slowly and repeatedly rotate the mixing ratio screw, don't care whether it's smooth or reverse, don't care whether it's thick or thin, you can use a very low idle speed to adjust to a stable and non-extinguishing speed, even if the adjustment is good, it's as simple as that;

4. Which use it so much, it must be stable, if it is not stable, it is not adjusted, it is not adjusted, but it is not adjusted, and it will rush and rush, and even turn off, that is, the idle speed is unstable, one will be high, one will be low, slowly rotate the mixing ratio screw, find a stable value, it's as simple as that, it's good and bad, it's just a theory, just know it, don't care about it at all;

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The following is a specific method to check whether the mixing ratio of the carburetor of the motorcycle is normal for the first certificate: 1. Start the engine, keep the idle running, and after the electronic concentration valve is completely closed, pull out the negative pressure pipe from the engine intake manifold, and let the air enter the cylinder from the negative pressure pipe interface of the intake manifold. This is because the air enters the cylinder from the negative pressure pipe interface, which dilutes the overly concentrated mixture, and the combustible mixture is fully combusted, so the engine idle speed increases.

2. If the negative pressure tube is unplugged and the engine is turned off immediately, it means that the mixture under idle condition is too thin, because the air enters the cylinder through the negative pressure pipe interface, which makes the combustible mixture thinner, and the combustible mixture is difficult to burn and stall. If the idle speed of the negative pressure pipe is unstable and does not turn off immediately, it means that the idle mixture is basically normal.

3. Judging by the color of the central electrode of the spark plug, you can roughly see whether the carburetor mixing ratio is too thin or too thick. Normally, the center of the electrode should be brick red. If the spark plug is white, it means that the wheel pin mixture is thin, and if it is black, it means that the mixing ratio is too thick.

Millions of car purchase subsidies.