First, the causes of damage to the fuel pump EFI engine fuel delivery is installed in the gasoline tank by the electric pump with pressure adsorption, its motor is also partially immersed in gasoline, gasoline from it to work in the high temperature cooling, in view of The working principle of it is easy to damage the principle is as follows: 1, the long-term fuel lamp alarm is not timely refueling, causing the motor part of the non-gasoline cooling, burn the motor and suction Fu diaphragm; 2, dirty gasoline block straw and diaphragm; 3, the most crucial point, some owners long open the electric fire switch, the engine does not fire, sitting in the car to listen to sound and talk, because the circuit connected to the gas pump to start work and can not release the pressure burned motor and diaphragm pressure drop or burn Die, I know, as long as the domestic brand is a manufacturer of gasoline pumps are reliable quality, such as your pump damaged several times, please take a look at their own habits are good.