The operation of a car engine with time leads to the fact that on the inner surfaces of the fuel system elements contamination is accumulated. Injector nozzles, fuel lines and valves and pressure regulators are the most exposed to such negative influence. In this case it is worth to apply to the employees of car service center for diagnostics and engine repair. Contamination is overwhelmingly the cause of electromagnetic injectors failure. Even with quality fuel filtration, heavy fractions are deposited in the form of carbon deposits and sludge. If the car does not start for a long time, you should contact this company: https://towingandscrapcarremoval.ca/blog-post/5-things-to-do-before-you-scrap-a-car/.
You’d be surprised, but most of the deposits appear after the engine is stopped, because then there is a lot of heating of the fuel injectors from the engine components, which have not yet had time to cool down. The heat is not removed with the fuel, so the light components of its residues evaporate, a
nd the heavy ones settle on the surfaces of the injectors in the form of deposits. Since nozzles are manufactured to the micron precision, suc
h deposits greatly reduce the flow capacity of the channel. As a result, fuel mixture formation, valve sealing and several other processes are affected.
Nozzles are exposed to the greatest contamination during low ambient temperatures, because the fuel mixture becomes excessively viscous. As a result, there are problems with starting the engine when it is not warmed up.
Nozzles should be cleaned of contaminants in the following cases when:
in addition to problems with starting an unpreheated engine, you notice unstable operation at idle speed and during transients;
there is a sag in the increase of rpm if the “gas” is fully pressed;
You notice a serious loss of engine power, which leads to a decrease in vehicle speed;
Average fuel consumption rises considerably;
there are skips in fuel ignition, too much popping in the car’s exhaust pipe, etc.
Such cases will draw attention of the owner of the car and will be the reason for address to service. Here you will be offered one of two possible options for cleaning of injectors:
cleaning on a special ultrasonic stand;
major flushing of the injector and injectors without removing from the engine of the car.
I think you are wondering which option of cleaning the injector is better. The advantage of the first method is the increased efficiency of cleaning the injectors themselves. But the fuel frame and other parts of the engine also need to be thoroughly cleaned. This can only be done by flushing the fuel system of the engine with solvents for such purposes. In the end, we advise you to choose the option of cleaning the injectors, based on the tasks set and the cost of the service, because in the case of Russian-made cars it is cheaper to put new injectors than to flush the old ones. This operation is better done in parallel with the flushing of other parts of the engine on a conventional single-circuit stand.
Although you should be careful here for the following reasons:
due to the lack of diagnostics on such stands it is impossible to understand the quality of the flushing;
the service may use inexpensive solvents, which will poorly clean the engine;
there may be no benefit from such service.
Therefore, we recommend not to save money and to address to service, in which these works are made on a two-circuit stand. As a result, you will completely clean the injectors and the rest of the car’s engine – fuel frame, etc. If the system has electromechanical fuel injection, the metering-distributor will also be flushed.
Solvent, which is used in the work on the two-circuit bench, is able to wash off dirt, sludge and soot from the working surfaces of the engine without leaving any residue. As a result, cleaning will affect all elements of the fuel system.
Specialists recommend to undergo maintenance and not to forget to do washing after every 15 thousand km. Ideally, flushing should be done together with planned oil replacement. By the way, it also concerns planned flushing of diesel fuel system.
After cleaning on a stand, it is worth to drive 10-20 km in extra load mode. Due to the increased pressure and temperature the remains of softened sediment and carbon deposits will be completely “blown” with fuel. Then pour a special composition for cleaning the engine valves into the tank. After a two-hour drive, the soot will be gone without residue from the valves and the surface of the combustion chamber walls.
For full comfort, at the end of all procedures, use the services of a car wash to bring and appearance of the vehicle in a suitable appearance.
Do not forget about such tips, and your car will not let you down.