Add: Mechanical&Electrical Industry Zone,Yuhuan,Zhejiang,China
When the fuel oil in the instrument warning light is lit, Fuel Pump the fuel tank is about 7 liters of fuel left, then the fuel tank in the fuel tank is about the red line shown in the figure. As the oil level is too low, the fuel pump motor is not fully cooled and lubricated,Fuel Pump will cause the motor to overheat or even stop. If the pump is often in this state of work, then the pump early damage is inevitable.
As the oil quality is poor, the fuel tank will be filled with a variety of impurities or foreign matter, fuel chestnut through the bottom of the filter inhalation of fuel, Fuel Pump pumped to the engine.
In this process, large particles of impurities are blocked by the filter, and small particles of impurities were sucked into the pump motor, is bound to exacerbate the oil pump motor wear, Fuel Pump resulting in early damage.
Gasoline filter has not been replaced for a long time, gasoline filter oil supply system is seriously blocked, gasoline pump pump oil, long-term high load caused by gasoline pump damage
1, gasoline on the pump has a cooling and lubrication. Fuel Pump Such as fuel after the fuel is not timely refueling will lead to oil cooling and lubrication effect decreased, causing damage;
2, low-quality gasoline impurities will lead to fuel system blockage, and cause damage caused by oil pump damage (such as: filter plug). Most of the early damage to the pump was due to the use of poor fuel.
Electric fuel pump for some reason, Fuel Pump will lead to the emergence of the car difficult to start, idle instability, acceleration, driving weakness, stop and stop the phenomenon, these reasons are:
1, the impact of hot air resistance;
2, dirty plug caused by reduced pump oil, Fuel Pump such as gasoline tank from time to time cleaning, resulting in oil pump into the port at the filter plug, cleaning the pump and filter, the pump can not return to normal;
3, pump capacity decline or failure for the oil filter dirty or reverse, Fuel Pump and sometimes due to refueling is not timely, resulting in increased heat load;
4, charcoal brush, spring, for the film, winding heat, wear increased, Fuel Pump the resistance value becomes larger;
5, the pump speed down, oil and oil decreased, Fuel Pump so that the pump failure.
The check method is: first with a jumper to the fault detection socket on the two detection jack short, and then open the ignition switch (do not start the engine). Fuel Pump At this time from the tank should be able to hear the operation of the fuel pump sound. If you can not hear the sound of operation, you can pinch the gasoline hose should be able to feel the oil pressure. Otherwise, indicating that the electric fuel pump does not work, should check the electric fuel pump power fuse, the relay and control lines are faulty. If you are normal, Fuel Pump you should check the electric fuel pump.
(1) with a dedicated wire to the diagnostic seat on the fuel pump test terminal across the 12V power supply;
(2) Turn the ignition switch to the "ON" position, Fuel Pump but do not start the engine;
(3) unscrew the fuel tank cover to hear the sound of the fuel pump work, Fuel Pump or hand into the oil hose should feel the pressure;
(4) If you can not hear the working sound of the fuel pump or the inlet tube without pressure, should repair or replace the fuel pump;
(5) If the fuel pump does not work failure, and the above check is normal, should check the fuel pump circuit wires, relays, fusible fuse with or without open circuit.