Situation 1: black smoke

Car body performance: the car"s engine shaking, exhaust pipe abnormal sound, while discharging black smoke, acceleration feels weak.

Cause of malfunction: The phenomenon of exhausting black smoke is more common in carburetor vehicles, this is because the carburetor model fuel injection quantity is not controlled by a computer, but by the pedal throttle control, in some cases excessive fuel into the cylinder later can not burn out of the car, so that we see the black smoke.

Procedures: 1. Carburetor cars are now basically old, to check the carburetor and other parts of the aging degree, carburetor cars are different from electric injection cars, to often carry out maintenance and adjustment, to develop a good car habits; 2. Electric injection vehicles to check every 30,000 kilometers cylinder line, every 10,000 kilometers to check the spark plug, some questions We need to change the topic in time.

Situation two: white smoke

Car body performance: visible a large number of white steam and accompanied by unstable engine operation, even if the engine preheated to normal working water temperature there is still a large amount of steam.

Failure reason: The white smoke may be caused by the engine cylinder gasket wear, resulting in a certain gap, resulting in a large number of water into the combustion chamber cooling system. Water can not burn, and after heating, water vapor is generated and discharged directly from the exhaust pipe.

Processing methods: 1. Check whether the engine cylinder block, cylinder gasket damage, check whether there is water in the tank; 2. Check the automobile instructions, in strict accordance with the manufacturer"s regulations to add the correct label gasoline.

Situation three: blue smoke

Car body performance: the explosive force of the vehicle decreased, feeling weak acceleration, increased noise, blue smoke exhaust pipe, and accompanied by the burning of organic oil produced by the burning of tar taste. By checking the oil gauge, we can also find that the oil consumption is too large. Under normal conditions, after each maintenance, the oil consumption should be within the normal range after driving 7500 kilometers, without any midway supplement.

Causes of failure: Blue smoke is mostly caused by engine internal faults, resulting in oil into the combustion chamber and produced, there are two common cases: cylinder wall scratches, poor piston seal or valve wear, will produce gaps, and the original responsible for lubricating oil at this time will be through these gaps into the combustion. When the room is involved in combustion, the oil that can not burn can produce blue smoke when it is discharged from the vehicle.

Procedures: 1. For older vehicles to check the cylinder block, piston and other parts of the sealing, found when blue smoke discharged to repair in time to prevent greater losses; 2. Oil should be added to an appropriate amount, too much, too little is not advisable. Regularly check the use of oil, once found abnormal oil consumption, immediately to the professional maintenance station for inspection.