Dry cleaning of the fuel injection system does not only include the use of the liquids described. For example, there are special additives that can be added to the fuel. They partially remove soot from the valves and clean the nozzles. This is more like a prophylactic agent and cannot completely clean the system in case of serious dirt. Dry cleaning of the nozzles without removing them from the engine The fuel pump must first be switched off. This is done by waiting for the engine to stall when it is running. There will be no pressure in the fuel system and the main work can be started. Then connect the hose of the homemade device and fasten it with a clamp with special care to avoid breaking during the cleaning procedure. Fuel system pressure can reach three atmospheres, which requires careful execution of all steps. Close the return system. Otherwise, liquids with chemicals may penetrate the tank, which is not permitted. Pour the flushing liquid into the prepared container. Connect the liquid pump to the mains.
The main step. Before flushing the nozzle, make sure that all connections are secure and leakproof. This requires the help of a second person, who must switch on the liquid pump and increase the pressure to 3 atmospheres. It can be assumed that the cleaning procedure has started. Depending on the volume of liquid used, cleaning of the injector may take about 20 minutes. Vince's fluid is sold in a 0.5 liter bottle designed to wash the injector of one car. It is necessary to wait for the end of the liquid. The exhaust fumes must be inspected externally. If cleaning is going on normally, there should be no smoke at the end of the procedure for cleaning the injector. Replace the candles with a new set, if necessary.
At the end of flushing, the homemade structure must be disconnected and the integrity of the fuel system must be restored: all hoses, pump fuse, etc. must be connected. Check operation of the power unit after cleaning. If faults that occurred before flushing are no longer visible, it means that everything has gone well. Professionals say that a properly conducted nozzle flushing allows to significantly reduce fuel consumption. It is more correct to bring fuel consumption to the factory parameters. At least, there is a possibility of significant fuel saving. Independent washing of diesel engine injectors is performed by the same method as gasoline ones. For this purpose the device considered by us and the procedure of actions will be suitable. But washing of the diesel fuel equipment demands more careful choice of chemical reagents and the big accuracy in carrying out of cleaning.
Washing of injectors after removing them from the engine Nozzles can also be rinsed by removing them from the engine. A special spray is available for this purpose, and the cleaning device is slightly different from the one described above. This method can also be used to rinse the injection system on your own, with great efficiency, but the whole procedure will be much more complicated and longer. The following materials are required: Two bottles of carburetor cleaner. Electric bell button. Pieces of electrical wiring. Lamp car 21 watts for 12 volts. Such lamps are installed in the direction indicators. PVC tape reel. The syringe is medical. Two terminals for connecting the nozzles. The syringe can be selected to insert an inlet of the nozzle with an o-ring, usually 2 ccm syringe. The spray tube in the canister must be connected to the syringe nose and rolled up with tape. Flushing procedure Reduce the pressure in the fuel rail, as previously discussed, without warming up the engine.
Disconnect the return fuel hose from the ramp and remove it. Disconnect the electrical wires from the nozzle and pull them out. Place the nozzle nozzles in the cleaning fluid for one hour. Pull the piston out of the syringe and insert the nozzle with the O-ring. Connect one nozzle terminal directly to the negative battery terminal. Connect the other terminal in series with the button and lamp to the plus terminal. Connect the tube to the canister, press the electric button and the valve. Cleaning fluid should be sprayed out of the sprayer. The flushing process should be continued until the liquid is sprayed finely and the flame is sprayed with a wide cone. After flushing the nozzles, experts recommend changing the oil in the engine. Self--cleaning of the injector allows you to evaluate your work and draw conclusions. If self-cleaning and soaking do not give a good result, it means that the dirt on the sprayers is very dense and is not cleaned by the chemical method itself. In this case, an ultrasonic cleaning bath should be used.