Why does the carburetor leak oil, how to eliminate it?
(1) The float is stuck and cannot close the needle valve, causing oil leakage.
The reason is that the long-term soaking deformation of the float by the gasoline and the contact with the wall of the float chamber may also be caused by the long-term friction gap between the float pin and the body float pin hole, which causes the float to contact the float chamber wall.
Remedy: If the float is deformed, replace the float. If the outer diameter of the float pin becomes smaller, replace the float pin. If the pin hole of the body float becomes worn, the carburetor can only be replaced. Otherwise, the repairman will usually Give you direct change to the assembly.
(2) The main oil needle is stuck by foreign matter, causing the oil level to rise continuously and leaking oil.
The reason is that the needle valve and the valve seat are used to control the amount of oil entering, and the sealing property is strict, and the contact surface between the two is high. If foreign matter adheres to the contact surface between the needle valve and the valve seat, the needle valve and the valve seat will not be tightly sealed, and oil leakage will occur. Foreign matter mainly refers to impurities and condensed gelatin in gasoline, so to avoid such failures, owners should pay attention to regularly clean the fuel filter and use good quality gasoline.
Remedy: Decompose the carburetor, clean the float chamber and the main oil needle and its valve.
(3) The float is damaged or immersed in gasoline, losing buoyancy and causing oil leakage.
The reason is that if the float is damaged or immersed in gasoline, the weight and buoyancy of the float will change, causing the oil surface to rise and causing oil leakage. The elimination method is to replace the float.
(4) The needle valve wear is not tight and the loophole is caused.
The reason is that the needle valve is worn during the long-term use of the impurities contained in the gasoline and the contact with the valve seat, and the two sides of the float float are unbalanced, causing the needle valve to be laterally stressed and worn.
The method of elimination is to replace the needle valve. At the same time, the user should pay attention to regularly clean the fuel filter and use good quality gasoline, replace the needle valve, and adjust the float floats at the same level on both ends. However, this is the case now. The repairman directly gave you the entire carburetor.
Suggestion: Mo friends can trim the lower part of the carburetor float needle valve, so that it is very flexible until the float is dropped. The float needle valve can be closed, and the carburetor various holes and oil passages are cleaned and carefully reassembled. The oiler, after running for a while, must use genuine parts when repairing the car. Don’t try to use some miscellaneous products cheaply, it seems to save money, but the loss in other places is far greater than the one saved at the beginning, but In terms of troubleshooting methods, it can only be said that the car owners who love to repair are doing their own work, because the repairman has rarely repaired this for you. It takes time and effort, and there is no profit, so the carburetor assembly is generally replaced.