What causes dripping water in the engine exhaust pipe?
It is normal for the engine exhaust pipe to drip , which usually indicates that the engine is working properly and the gasoline is fully burned. The following are the main causes of engine exhaust pipe dripping and solutions:
The main reason
steam condensation :
When gasoline burns, it produces carbon dioxide and water vapor. When this water vapor encounters the cooler exhaust pipe, it quickly cools and condenses into water droplets, which drip to the ground.
Normal water discharge from the exhaust system :
When the fuel and air in the exhaust system are mixed and burned, a certain amount of water vapor is produced. When the water vapor passes through the exhaust system, it condenses into liquid water and drips down the exhaust pipe in the low temperature environment.
tank leakage (abnormal condition) :
If there is a leak in the cooling water tank in the engine, the cooling water may flow into the combustion chamber, causing the exhaust pipe to drip. This situation requires prompt inspection and maintenance.
Fuel additives and tail gas purification plant :
Some fuel additives and exhaust gas purification devices contain water, which may also cause water droplets to form and drip after mixing with the exhaust gas in the exhaust pipe.
solution
normal circumstances do not need to be handled :
If the exhaust pipe dripping is caused by water vapor condensation or normal discharge of water from the exhaust system, then this is a normal phenomenon and no special treatment is required.
Check the tank for leaks :
If it is suspected that the leakage of the water tank leads to the dripping of the exhaust pipe, it should be timely checked whether the water in the cooling water tank of the engine room has leaked out, and if necessary, repair.
Pay attention to water in the exhaust pipe :
Although the exhaust pipe dripping reflects the vehicle performance to a certain extent, too much water may damage the oxygen sensor in the three-way catalytic converter, affecting the accuracy of the engine oil supply, and thus affecting the vehicle performance. In addition, long-term water accumulation may accelerate the corrosion of the exhaust pipe. Therefore, if there is a large amount of water in the exhaust pipe, you should go to the 4S shop or repair shop for inspection in time.
In summary, the engine exhaust pipe dripping is normal in most cases, but it is also necessary to pay attention to whether there are abnormal conditions, such as water tank leakage, and timely treatment.
Black smoke from the tailpipe. What's going on?
Black smoke indicates that the exhaust gas contains too many carbon particles, which is caused by incomplete combustion during engine operation. There are usually several reasons for this:
1. The combustible mixture is too strong;
2, the mixture of gasoline and oil in the mixed oil is not correct, or the use of oil grade is not correct, when the oil is too much or the oil quality is poor, the oil in the combustible mixture can not be completely burned, resulting in black smoke;
3, the two-stroke engine with separate lubrication, the oil pump is out of whack, and the oil supply is too much;
4, two-stroke engine crankshaft oil seal damage, gearbox oil into the crankcase, with the mixture into the combustion chamber, resulting in too much oil in the mixture;
5. The oil ring in the piston ring of the four-stroke engine is seriously worn or broken, and the oil enters the combustion chamber;
6, the four-stroke engine with too much oil. A large amount of oil channeled to the upper part of the piston into the combustion chamber to participate in combustion;
7, the water-cooled engine cylinder liner is damaged, cooling water into the cylinder, affecting normal combustion. If the smoke is found to be slightly white, and the water in the tank is consumed too quickly.
Troubleshooting:
(1) If the engine exhaust pipe emits a small amount of black smoke and is accompanied by a rhythmic sound, it can be concluded that a few cylinders do not work or the ignition timing is caused by misalignment. It can be used to find out the non-working cylinder by cylinder break off method, or check and correct the ignition timing;
2, if the engine exhaust pipe discharge a lot of black smoke, and accompanied by the sound of firing, it can be determined that the mixture is too strong. Check whether the choke is fully opened in time, and carry out high-speed maintenance if necessary; After flameout, look at the main nozzle from the carburetor port, if there is oil injection or dripping oil, the oil level of the float chamber is too high, should be adjusted to the specified range, tighten or replace the main measuring hole; The air filter is blocked and should be cleaned or replaced.
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