Fuel filter is contained in the fuel in the iron oxide, dust and other solid impurities removed, to prevent clogging of the fuel system, reduce mechanical wear and ensure stable operation of the engine, and improve reliability. Fuel filter is a fine part, in use for some time, use the Auto Diagnostic Tool to check the fuel filter performance, if the fault code is 00538, need to replace the fuel filter. Method is as follows:
First, loosen the clamping device at the junction of the oil and fuel filter, then removed fuel filter from the oil passage, followed by a stopper oil passage, so you can prevent fuel spillage. Most of the oil installation in the fuel filter is marked with two arrows, one is the fuel flowing into the arrow, and the other is the fuel outflow arrows, with arrows to indicate the flow of fuel through the fuel filter when. So when we installed the fuel filter, be sure to make the arrow pointing the direction of the engine, that the engine oil is flowing.
In addition, it should be noted that the clamping device in the circuit used is specially designed, rubber hoses and fuel filter in the junction of these two components tightly clamped to achieve sealing effect. Compared with the ordinary clamping device, this device does not cut into the rubber hose, and therefore does not cause damage to the rubber hose, and this clamping device can withstand high oil pressure. In contrast, the ordinary worm type clamping device more easily damage rubber hose caused fuel leakage. Finally, we should also ensure that the rubber hose clamp device is installed in the correct position and in accordance with the specified specifications of the clamping joint.
If the vehicle is without the need to maintain the fuel system, and only use a built-in to the fuel filter, then in vehicle periodic preventive maintenance process, it is not possible to the oil pump, a filter and a fuel output device all replaced, even automotive preventive maintenance interval is long, it is impossible to do that, because of the high cost of doing. But if you use Launch X431 V+ Pro3 or Launch X431 Diagun III tools to check the. It is found that the anomaly of the working performance of the engine, the fuel pressure and fuel system in the critical value, replace the fuel filter placed inside the tank is very necessary.
When using this lute-shaped coupling member also noted that during the installation process must not make the wrong buckle connecting thread situation appears, it should not be applied in large part on the binding of clamping force. Do not use RTV or other types of seals on these lute-shaped coupling member. When installing the coupling member, use wrench to ensure proper clamping force.
After completion of maintenance work on the fuel filter, put all the parts are assembled, replace the fuel pump fuse, and then, in the case of the ignition system does not work, the engine is rotated several turns, until the establishment of the fuel system far from normal when the fuel pressure. At this point, you should check the fuel filter and oil line for leaks. If Autel MaxiScan JP701 or Autel MaxiDas DS708 tool test results show that everything is normal, start the engine run a few minutes, and then re-check again to make sure there are no leaks happen.