1, the fuel must be clean.
There are many impurities in fuel, which will accelerate the wear of electric fuel pump and reduce its service life. In addition, unclean fuel will also lead to the blockage of fuel filter and injector, which will affect the fuel supply pressure and normal fuel injection and reduce the engine performance.
2. Replenish fuel in time
The electric fuel pump of EFI engine should meet the requirements of sufficient fuel and stable working pressure of injection system. Most fuel pumps are installed in oil tanks immersed in oil to cool the oil pump motor, reduce noise and prevent air resistance. When the fuel in the fuel tank is insufficient (some warning lights are flashing), the fuel should be replenished in time to prevent the fuel pump from burning out.
3, the correct choice of fuel
Engines have higher requirements for fuel quality and brand, and EFI engines have higher requirements. For cars equipped with catalytic converters and oxygen sensors, only lead-free high-grade gasoline can be used. If leaded gasoline is used, the exhaust catalytic converter will fail, the oxygen sensor will also fail, and the normal operation of the engine will be affected.
4. When turning on the ignition switch, don't disconnect the electrical equipment circuit.
For electronically controlled gasoline injection vehicles, the 12V electric working device cannot be turned off when the ignition switch is turned on. Because most electrical appliances are composed of electromagnetic coils, if the circuit is cut off, the coils will generate instantaneous high voltage under the action of self-induction, which may lead to the damage of computers or sensors. Cars using EFI engines should also be careful not to install high-power mobile wireless phones. When using an ordinary mobile phone, try to stay away from the computer and its wiring harness to prevent wireless signals from affecting the computer's work.
5. Clean the fuel system and air intake system regularly.
Unclean fuel system will cause a series of faults, such as unsmooth or even blocked oil circuit, lax valve closure, poor atomization of fuel injection, insufficient fuel supply and low fuel supply pressure, which will directly affect the normal operation of the engine. In this regard, special cleaning agents should be used to clean the dirt and fuel gum in the fuel system. Due to the influence of service conditions, dust in the air will block the air filter or cause poor air intake.