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The method of detecting the working height of the carburetor oil float

Whether the working height of the carburetor oil float meets the technical requirements has a great impact on whether the carburetor can work normally. When the carburetor is overhauled and adjusted, the working height of the oil float needs to be tested to confirm whether its working height meets the technical requirements. The commonly used detection method is to remove the carburetor from the engine, twist the fastening screws of the float chamber, remove the float chamber shell, and then turn the carburetor body upside down, so that the oil float will naturally droop under the action of its own weight. Close the triangular needle valve, and then use a special measuring tool to detect whether the working height of the oil float meets the technical requirements. Most carburetors can use this method for detection. However, some carburetor (such as vacuum carburetor more) can not use this method for testing, mainly triangular needle end of the spring elasticity is not the same. The spring at the end of the triangular oil needle of this carburetor is especially soft. When detecting the working height of the oil float, the carburetor body is inverted. Under the action of its own weight, the oil float not only closes the triangular needle valve, but also compresses the spring at the end of the triangular oil needle. As a result, the actual working height of the oil float is much lower than the standard height. Therefore, it is difficult to ensure the correctness of the detection data, it also brings some trouble to correctly adjust the working height of the oil float, but the use of this triangular needle valve has certain advantages. When the motorcycle is driving on uneven roads, it will produce greater vibration, and the oil level of the carburetor will fluctuate, and the oil float will float up and down under its influence. Ordinary triangular needle will open the triangular needle valve abnormally frequently, which will lead to abnormal oil level, it has a certain impact on the normal operation of the engine, and the special soft spring at the end of the triangle oil needle can avoid and eliminate this situation. When the triangular needle valve works, the triangular needle valve is closed first, and then the spring at the tail end of the triangular oil needle is compressed. Therefore, when the oil level fluctuates greatly, the oil float will float up and down, but due to the buffering effect of the spring at the tail end of the triangular needle, the triangular needle valve will not be opened abnormally frequently, thus ensuring that the oil level always maintains a normal height. Therefore, the carburetor equipped with this kind of triangular oil needle, the working height of the oil float cannot be detected by regular methods. The detection method that should be used is to remove the carburetor and remove the float chamber shell, use a clean rubber tube about 200mm long, insert one end into the oil inlet nozzle of the carburetor, and hold the other end in the mouth. Hold the carburetor with both hands according to the working position, while blowing continuously, while gently lifting the oil float with your fingers, when blowing, the air will produce airflow noise through the unclosed triangular needle valve, when the sound of the air flow just disappeared, it means that the triangular needle valve has been closed. At this time, the position of the oil float is the working height of the oil float. The finger immediately stops supporting the oil float and keeps the original position still. Then use a special measuring tool for testing to confirm whether the working height of the oil float meets the technical requirements.

2024年04月08日

Banana water gives carburetor a new look

Can you know that the carburetor can achieve the effect that the banana water is clear? When the carburetor is repaired, the decomposition parts are usually soaked in gasoline, and then the compressed air is blown clean by hand. Since gasoline cannot dissolve all the dirt in the oil passage, the cleaning effect is not ideal. The dissolution and penetration capacity of banana water is significantly greater than that of gasoline. Using banana water to clean the carburetor can remove all kinds of fouling inside and outside the carburetor and restore the carburetor as new.

2024年04月08日

Carburetor cleaner life tips to share

Carburetor cleaning agent is a solvent aerosol, which mainly dissolves the carbon deposits and colloids in the carburetor in the past, including metal scale. It has a dissolving effect on carbon deposits and a certain dissolving effect on metals. It is feasible to use carburetor cleaning agent when there is oil on the surface, and the volatilization speed is very fast and will not corrode the engine, however, if the engine or oil seal is completely invaded into the carburetor cleaning agent, it will corrode and swell the rubber parts. The main purpose of carburetor cleaning agent is to clean the oil circuit, remove carbon deposits and residues Carburetor cleaning operation. 1. Clean the throttle: Remove the engine trim cover, remove the throttle, and use the carburetor cleaner to clean it, dry it with a cotton cloth and install it. Cleaning the throttle is basically every time we go to the 4S shop maintenance staff will advise us to do so. Under normal circumstances, the cleaning cycle of the throttle valve is 20000 kilometers, and the charges of 4S shops vary greatly depending on the brand and model, ranging from 200 yuan to 800 yuan. In fact, we can do it yourself DIY cleaning throttle, so you can save this not a small cost. Because the process of cleaning the throttle is very simple and the cost is very low, you only need to buy a bottle of Hongfu carburetor cleaner for 10 yuan. 2. Clean the carbon deposits inside the engine: Open the oil cap, pour the whole can of detergent (mixed with old oil), close the oil cap, and turn off the engine after 10 minutes of ignition and idling. Clean the carbon deposits inside the engine, and the detergent dissolves the deposits such as sludge, colloid, moisture and metal debris inside the engine, and can reduce the pollution of new engine oil and extend the service life of the engine. Its cleaning cycle is generally once every 30000 kilometers. The cleaning method for carbon deposits inside the engine is also very simple. You only need to add a bottle of engine internal cleaning agent to the oil port before maintenance, and run it at idle speed for about 10 minutes, and then immediately Maintain and replace the oil filter. 3. Clean the carbon deposit in the oil circuit: Before refueling, add the whole bottle of fuel additive to the fuel tank. Look at the instructions. How many liters is your car's fuel tank? Generally, a bottle of fuel additive is used for a 50-80 liter fuel tank. Cleaning carbon deposits in the oil circuit includes cleaning fuel injectors, combustion chambers, spark plugs, throttle valves and other parts. The purpose is to solve the problems such as insufficient horsepower, fuel consumption, panting, poor acceleration or difficulty in starting caused by carbon deposits, colloids and dirt in the oil circuit system. Cleaning these does not require any disassembly, as long as the car's fuel tank is regularly added to the special cleaning type fuel additive can achieve a good cleaning effect. Buy a bottle of air intake system cleaner, pour it into the liquid storage tank of the special cleaning equipment, connect it to the air intake system, and use vacuum to suck the cleaner into the air intake road to achieve the cleaning purpose. Cleaning the carbon deposits in the intake system mainly refers to cleaning the carbon deposits inside the intake duct and intake manifold. Its purpose is to remove carbon deposits in the intake system, increase intake air flow and speed, and reduce engine jitter and idling instability. Generally, 4S shops or repair shops will use the method of hanging bottles to drive the air intake cleaning fluid into the air intake pipe, and the cost is quite high. However, Hongfu's suggestion is to minimize the number of such cleaning, and the general cycle is about 60000 kilometers. Because of the disadvantages of this kind of cleaning, although part of the carbon deposits that have been cleaned will be discharged through the engine, there will always be a part of the carbon deposits intercepted by the three-way catalytic converter, which is easy to block the three-way system, so the number of cleaning should not be too much.

2024年04月08日

Reasons for high fuel consumption of carburetor and troubleshooting methods

1. Oil leakage of carburetor 2. Partial blockage of air volume holes of various oil systems Reason: Partial blockage of the air volume holes of each oil system will cause the oil supply of the carburetor to be too thick and cause fuel consumption to increase. Exclusion method: according to the aforementioned carburetor cleaning method can be cleaned. 3. Starting enrichment device is not closed tightly See the previous section for reasons and troubleshooting for lax shutdown of the starter enrichment device. 4. The outer diameter of the main oil needle decreases after wear, and the main nozzle hole is too large after wear Reason: The above-mentioned parts are worn out due to long-term high-speed scouring of impurities contained in gasoline during use, which reduces the outer diameter of the main oil needle and the main nozzle hole is too large, resulting in an increase in fuel supply and fuel consumption. Exclusion method: replace the new measuring hole

2024年04月08日