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Abnormal failure: What is the reason why the exhaust pipe is black smoke? What is the cause of white smoke? What is the reason for taking blue smoke?
1. The exhaust pipe is black smoke : This indicates that the engine is too rich due to the mixture. When the air filter is dirty, the spark plug is bad, and the ignition coil is faulty, it will cause the engine to emit black smoke.
2. The exhaust pipe is emitting white smoke : Explaining that the atomizer of the injector is poorly atomized or dripping so that some of the gasoline does not burn; the gasoline contains water; the cylinder head and the cylinder liner have cracks that are invisible to the naked eye, and the cylinder head gasket is damaged so that the water enters the cylinder. The temperature is too low. Can be solved by the following methods: cleaning or replacing the injector, adjusting the fuel injection pressure; removing water from the tank and the oil circuit; not buying low-priced and inferior oil; replacing the cylinder gasket, the cylinder sleeve, and the cylinder head.
3. The exhaust pipe emits blue smoke : This shows that the engine oil enters the combustion chamber to participate in the combustion, the piston ring and the cylinder sleeve are not completely run in, and the engine oil enters through the gap; the piston ring is glued in the groove, and the piston ring is installed on the opposite side of the cone, losing the oil The role of the piston ring wear excessive, oil running into the combustion chamber from the gap; oil surface oil sump is too high; valve and duct wear, clearance is too large. It can be solved by the following methods: The new vehicle or the overhauled locomotive must be adjusted to the engine according to regulations, so that the parts can be properly meshed; clearly see the assembly mark, the correct installation of the piston ring; exchange qualified or enlarged size of the piston ring; check the oil The reason for the rise of the shell oil surface is to release the excess oil in the oil pan; to reduce the oil in the filter oil pan; to replace the valve guide.
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