Diagnosis of engine malfunctions is carried out, as a rule, at service stations that have qualified employees and equipment, it is capable of this operation. Modern cars should be diagnosed only in branded car services, since the technologies of all brands are different. Of course, there are universal centers that are certified by various manufacturers. This certificate confirms the competence of the center in the field of these services.
Such equipment, as a rule, costs a lot of money, and its maintenance is beyond the power of small service stations, so you can not worry about the quality of service.
Diagnosing engine malfunctions can be much cheaper. This can be achieved simply by using the inquisitiveness of your mind. Sending the car to the service should be preceded by a simple engine diagnosis by candlelight, they can tell a lot about the condition of the car.
No matter how complicated the car’s engine, no matter how electronics it controls, it has working parts that tend to wear out. This wear can be determined by the color of the candles. It should be remembered that such a technique is applicable exclusively to gasoline engines, since there are simply no diesel engines either.
Let's start with the worst - soot on spark plugs. If such a sign appears, then with it you can notice the oil consumption, as well as increased fuel consumption. In addition, the engine will become much smokier. All this indicates the wear of the piston group in the form of piston rings, as well as valve stem seals. Oil simply enters the combustion chamber. Probably not worth talking about repair methods.
Diagnostics of engine malfunctions can reveal not only existing problems, but also “rudiments”, which will then become a serious problem. It happens that soot is observed on candles. It is also black but easy to wear. In this case, it is worth adjusting the carburetor, or check and, if necessary, replace it. The problem here is that the combustible mixture is re-enriched with gasoline, which leads to soot formation on all surfaces in the combustion chamber. After adjustment, it is advisable to verify the elimination of the malfunction and give the engine at medium and high speeds.
Among other things, the diagnosis of engine malfunctions allows you to increase its resource, since not all malfunctions immediately damage the unit. With some, the engine can work for 10,000 km, after which it will “stand up to a stake”. This situation will be a disaster for every motorist.
There is also the opposite effect when there is not enough gasoline in the mixture. Then the engine is difficult to start. On the twisted candle you can see a white coating. The solution to this problem is the same as the previous one.
Engine diagnostics and repairs can be carried out at home, but this requires a solid set of tools, as well as enough time and effort. Knowledge in this area will not interfere. If there is no self-confidence, then you should go to the service station.