When a car is in use, it is inevitable that it will fail. For seasoned veteran drivers, the problem can usually be found “in one stepâ€. Most people are helpless in the face of faults. Learn to find faults yourself now.
Vehicle breakdown can be roughly divided into three parts: First, the circuit failure; Second, the oil circuit failure; Third, the driving system failure, such as steering, braking, transmission and so on.
Among them, the circuit fault is divided into high-voltage circuit and low-voltage circuit failure. In actual use, about 60% of vehicle faults are circuit faults and 30% are in the oil circuit. Most of these faults can be eliminated by themselves. Only about 10% are faults of the driving system. These faults are mechanical faults. Most of the vehicles can still travel when they occur, and they should go to a special service station for repairs.
When you are in trouble while driving, don't worry, don't bother, first look at the situation of the fault indicator. Quiet to analyze the phenomenon of failure, and ask why a few more? There are two ways to judge and distinguish the failure of the oil circuit: First, whether it is suddenly turned off or slowly extinguished during driving, and most of them are circuit failures when the flameout suddenly occurs, and when the flame is turned off gradually, or the vehicle constantly “stirring†phenomenon, most of them are oil paths. malfunction. The second is “test fireâ€. If there is no central high-pressure fire or sub-cylinder fire, it is a circuit failure. If there is a high pressure fire, the problem is in the oil circuit. Most of the mechanical failures are accompanied by abnormal sounds, and the sound changes with the speed of the vehicle. When the vehicle stops, the sound disappears and there is no direct relationship with the oil circuit failure.
Use the “paragraph-by-section negation method†to lock the “focus†in a specific place. First understand what kind of fault it belongs to, and specifically check whether the outside is abnormal. If the wire is broken or short-circuited, if there is any looseness in the connection area, there is no burning smell of the wire in the engine, there is oil leakage in the oil pipeline, and so on.
It is worth reminding that the new cars are now mostly "EFI" vehicles, which are electronically controlled combustion and have fewer failures. This is in contrast to the failure probability of older carburetor vehicles. What needs to be remembered is that, if the circuit breaker of an EFI vehicle malfunctions, it will often require a special computer detector to detect it. The driver should not use his own hands to avoid breaking the circuit program.
Second, carbon deposition cleaning is very important
1, use clean gasoline
Gasoline impurities are the main components of carbon deposition, so the cleanliness of gasoline has a weak tendency to form carbon deposits. However, it should be noted that high marks do not necessarily mean high quality, and that the marks only represent the octane number of the oil and do not represent quality and cleanliness.
Some car owners use gasoline cleaners in gasoline to ensure the cleanliness of gasoline. This can effectively prevent the formation of carbon deposits on the metal surface, and can gradually activate the original carbon particles and slowly remove, thus protecting the engine from harm. However, the addition of gasoline cleaner must be careful, if you add a counterfeit product will have the opposite effect.
2, do not drive for long periods of idling
With a long idle time, the time required for the engine to reach normal temperature will be longer. Gasoline is sprayed on the back of the valve and the evaporation rate is slower. Carbon deposition also occurs. At the same time, often idling, the air flow into the engine is also small, so that the erosion of carbon deposition is also very weak, it will promote the deposition of carbon deposition.
3, pay attention to the timing of flameout
For cars equipped with turbocharger, do not turn off immediately after driving at high speed or after climbing. Turn off at 10 minutes after idling. The car equipped with a turbocharger will form carbon deposits faster than normal suction. The car is several times faster.
It is recommended that the vehicle owners perform the free-to-remove cleaning of the air intake system every 20,000 to 40,000 kilometers under the conditions that the conventional maintenance meets, that is, the inlet of the vehicle using a dedicated device-specific method without disintegration of the engine. The carbon deposition operation is performed at the sites where carbon deposition is likely to occur, such as valves, oil passages, and the like.
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