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Is the role of the petrol pump gas sucked out from the gasoline tank, and the gas tank has a certain pressure, so as to make it, to overcome the resistance of the pipeline, concession road and petrol filter into the carburetor float chamber or electronic control injection engine oil guide tube.

Gasoline pump common faults:

Insufficient gasoline pump oil gasoline pump oil depends on the pump membrane, its large travel, the pump oil should be much; However, gasoline pump pump oil will be less, the engine fuel, more gasoline pump oil is inevitable, if the engine fuel consumption is much, but the actual fuel supply quantity is less, this situation is at the gas pump oil shortage, there will be a plane carburetor float chamber to decrease, lack of engine power.