Common faults and main causes of engine
(a) oil consumption anomaly
When a car is running, engine oil consumption more than usual, driving a mileage, the dashboard soon showed that oil shortage, such a situation is usually due to the following 3 points: first, the reason may be due to Baotou beiben engine parts of the piston sealing problems, cause the piston and the cylinder wall gap is too large, appeared the phenomenon of burning oil. Second, it may be the engine parts wear serious, so that the gap between the parts is too large, resulting in abnormal oil consumption. Third, the use of individual engine lubricating oil is not up to the standard, resulting in abnormal oil consumption.
(two) engine overheating fault
Due to the special structure of automobile engine, easy in operation, the coolant temperature is too high, once the coolant temperature is higher than the normal value, the engine can not be normal cooling, will cause the engine to overheat, affect the normal work of the engine. The main reasons for the cooling system are: thermostat failure, radiator failure, fan does not turn, water tank blockage, etc..
(three) engine room odor
Affected by the Baotou beiben engine accessories high temperature, easy to lead its surrounding burning or melting, exudes a pungent smell. Engine room smell is also likely to be maintained in the process of maintaining a large number of lubricating oils and fats, with the engine temperature rise and the smell of volatile.
(four) abnormal color of exhaust gas
Is there a point of failure in the car engine performance, from the exhaust color of the abnormal analysis of engine failure. The color of the exhaust gas after the normal combustion of gasoline should be colorless, and when the hair. First, the tail gas is black, because the fuel is not fully burned. Second, the fuel is not up to the standard of combustion, or gasoline contains water will be discharged white tail gas. Third, exhaust color is blue, probably because the piston ring wear due to reasons such as big or counterpart oil ring, causing oil up, into the combustion chamber of the engine, or infiltration down from the valve guide the oil in the combustion.
Engine common fault maintenance strategy
(1) control of the consumption of lubricating oil
The lubricating oil of Baotou beiben parts of the normal operation of the engine will inevitably have to consume a certain amount of lubricating oil consumption anomalies often correspond to a failure of the engine. The lubricating oil consumption appears abnormal, should first check the quality and quantity of the oil, replace the lubricating oil when necessary, to avoid the problems caused by oil engine can not operate normally. In the exclusion of the quality issues, should be one by one investigation related parts, components may be due to severe wear parts, the gap is too large or the oil pressure is too high, resulting in oil jumped into the combustion chamber. But the oil leakage is mainly because the seal gasket becomes hard aging, the valve is stuck.
(two) to monitor the engine overheating in a timely manner
Coolant temperature anomalies, will be reported in the automotive dashboard general tips, in the discovery of coolant temperature anomalies, should check to see if the coolant leakage. Note that you can not stop immediately when, also can not immediately fill the coolant, but the engine temperature is normal after the operation. If the coolant is quite a few, should check the engine thermostat, fan radiator failure. Engine overheating, the need to master the basic knowledge and maintenance of vehicle drivers. To carry out regular maintenance of the engine test.
(three) to eliminate the special smell of the engine
The vehicle is in use process, if it is found that the engine has a pungent odor or smell, should immediately stop, check whether the line around the engine to soften or burned, charred or short circuit to timely repair, avoid safety accidents more. There is still a bad smell after the failure of the line, which should be considered whether there is an oil on the surface of the engine, the foreign matter is heated volatile or burning and the like.
(four) the exhaust smoke color abnormal troubleshooting
Baotou beiben accessories engine starting operation will fuel combustion, will produce exhaust emissions, according to the color is able to distinguish the part of engine failure. When the exhaust gas is black, it is usually because the mixer is too thick, the fuel can not be completely burned, this situation should be checked with the intake of the sensor. Exhaust color is white, usually because of poor fuel gasification, no combustion will be discharged from the exhaust pipe spark plug fault and poor fuel quality is the possibility of a large. If the tail gas is blue, it is necessary to solve the burning oil problem, there may be a spark plug or valve oil seal problems, should be timely investigation, if necessary, replace the new parts.
Master the common engine fault maintenance methods, can reduce traffic safety hazards, and do a good job in regular maintenance, can make the engine life longer.