Generally, it is caused by sensor failure or damage to sensors such as air flow meter. It is necessary to check the engine ignition coil and spark plug, as well as the working performance status of related sensors, in order to determine the specific fault location and prescribe the right medicine to solve it.
When the engine mixture is too rich, you can see gasoline leaking at the position of the valve shaft, and the engine power is insufficient, it is difficult to accelerate, the exhaust pipe will have abnormal noises and black smoke, and even Carbon deposits on spark plugs will increase, and in severe cases, it will automatically turn off and fail to start. The most common faults of the mixed gas fault are the air filter and the fuel injector. It may be that the air filter is dirty or the filter screen is blocked, or it may be oil leakage or triangular needle after the float is broken. It is strictly forbidden to close the valve, which may cause the oil level in the float chamber to be too high. It may also be caused by vacuum or mechanical oil-saving ball valves that are not closed tightly and cause oil leakage, which increases the oil supply of the main throat.
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