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The old driver knows a word: "looking at the six roads and listening to all directions". He said that he should listen more and watch more while driving. But do you know that in fact, not only must you look at the road when you are driving, you must also develop your own habit of observing the condition of the car. As long as it is carefully discovered, some glitches in the car can also be avoided in advance.
Maintenance car does not ask how to use the eyes to see the car failure. Through the color of the exhaust gas to determine the fault of the car. The normal tail gas should be colorless and odorless, and car exhausts of different colors and different tastes are likely to indicate that the vehicle itself is facing some failures.
1. Black smoke emission performance of the exhaust pipe: engine jitter, abnormal sound emission of the exhaust pipe, and discharge of black smoke at the same time, feeling powerless when accelerating.
Cause: There are many causes of black smoke. If the car is black smoke, the reason is more complicated. For example, when the cold start, the spark plug does not work well, it takes a long time to start the motor, so that the mixture gas accumulated in the cylinder can not be completely burned and there will naturally be smoke emitted; or the vehicle ignition time is wrong, and the ignition timing is also wrong. Caused black smoke. EFI vehicles generally emit very little black smoke. If black smoke is emitted, most of them are faulty in the cylinder. "Broken cylinder" is a common one.
Method: Carburetors are now basically on the age of the car, we must constantly check the aging of the carburetor and other mechanical parts, carburetor car is different from the EFI car, it is necessary to carry out maintenance and adjustment, to develop good The habit of using cars. EFI vehicles should inspect the cylinder line every 30,000 kilometers, and check the spark plug every 10,000 kilometers.
2. White exhaust performance of the exhaust pipe: When the vehicle is in motion, it can be seen that a large amount of white steam is emitted and the engine is running unsteadily. Even if the engine is warmed up to normal working water temperature, a large amount of water vapor still emerges.
Cause: The white smoke emission may be due to the wear of the engine cylinder's cylinder head gasket, resulting in a certain gap, resulting in a large amount of water in the cooling system entering the combustion chamber. Water cannot be burned, generates steam when heated, and is discharged directly from the exhaust pipe.
Method: Check the engine cylinder block, cylinder pad for damage, check the tank for water. In addition, check the car manual and add the correct number of gasoline in strict accordance with the manufacturer's regulations. In addition, there will be a small amount of white exhaust gas when the low-temperature hot car, which is a normal phenomenon of cold and heat exchange, white smoke behind the hot car disappeared.
3. Exhaust pipes emit blue smoke: the explosive power of the vehicle is reduced, the feeling of acceleration is weak, the noise is louder, the exhaust pipe has blue smoke exhausted, and the espresso flavor produced by the burning of organic oil. Through inspection of the oil gauge, it is also found that the oil consumption is large. Under normal circumstances, after each maintenance, the oil consumption should be within the normal range after 5,000 km.
Cause: The blue smoke is mostly caused by an engine internal fault, which causes the oil to enter the combustion chamber. Commonly there are two cases: First, serious wear and tear. Cylinder wall scratches, poor piston seals, or severe valve wear, will produce gaps, and the oil that was originally responsible for lubrication will now enter the combustion chamber through these gaps to participate in the combustion, when the oil can not be burned out of the vehicle when the blue Colored smoke. Second, overfilling the engine oil can also lead to burning of engine oil. Some owners mistakenly believe that the more oil the better, but do not know that excess oil will be brought into the cylinder for combustion, resulting in burning oil phenomenon. Excessively filled oil will also block the normal operation of the crank arm, allowing it to do more work and increase energy consumption.
Method: For older vehicles, always check the tightness of cylinders, pistons and other components, and find that when the blue smoke is discharged, it is timely to repair at the repair station to prevent further losses; the amount of oil added must be appropriate, too much, too little It is not desirable. Regularly check the oil usage. Once abnormal oil consumption is detected, go to a professional service station to inspect it.