SYMPTOMS OF A BAD OR FAILING EXHAUST PIPE/TUBE
Leakage of the exhaust pipe will affect the power of the car and increase the fuel consumption of the car. Exhaust pipe leakage has a greater impact on turbo-charged cars, and has a smaller effect on naturally aspirated cars. Exhaust pipe leakage also adds to the noise of cars.
Exhaust pipe leakage also depends on the location of the leak. If it leaks in the front section, this will cause the exhaust back pressure to decrease, resulting in the weakness of the car engine, making it difficult to start, and increasing fuel consumption. If the air leaks in the middle section, the water produced by the exhaust pipe will corrode the exhaust pipe for a long time, and the exhaust pipe will rust over time. If the air leakage is in the tail section, it has no impact on the car. It is recommended to repair the air leakage in the front section and the air leakage in the middle section in time. Serious trauma can cause the exhaust pipe to break. In addition, common problems with exhaust pipes include drainage and smoke exhaust. Generally, the exhaust pipe drainage is a normal phenomenon, which proves that the car’s engine fuel burns sufficiently, and water will be produced when it comes into contact with the outside air. If there is a large amount of drainage, it may be accumulated water in the exhaust pipe, and it must be treated in time. Generally, the engine exhausts smoke, and the diesel engine is more commonly caused.
Exhaust pipe drainage
It is normal for a car’s exhaust pipe to drip. It proves that your car’s engine is fully burned, and the car’s exhaust pipe will drip water outwards. In fact, this is a very normal phenomenon, and it has nothing to do with the exhaust pipe.
The reason why the exhaust pipe drips water is that after the car gasoline is completely burned, carbon dioxide and water are generated. The water turns into water vapor at high temperature. The water vapor is colorless and transparent at high temperature, but when the water is below 100 °, the water vapor will condense into water. If the condensed water droplets are small and suspended in the air, the water vapor will appear as a white gas. But when the temperature is low, the white smoke from the exhaust pipe is water vapor. It became water. The water droplets discharged from the exhaust pipe are the water vapor generated after the combustion of gasoline, which is condensed in the exhaust pipe and the muffler, but when the ambient temperature is high, the water vapor has been discharged without condensation. When the temperature is low, water vapor will condense into water droplets on the exhaust pipe wall and flow out with the exhaust gas. This phenomenon is relatively normal in most cars.
If there is a lot of water, the exhaust pipe may have accumulated water at this time. So I suggest you go to the store where you bought it, and it is free if there is a warranty.
Exhaust pipe emits a lot of smoke
After the diesel engine is started, a large amount of off-white smoke is emitted from the exhaust pipe.
Failure analysis:
This failure is generally caused by the diesel injected into the cylinder being discharged without fire or entering the combustion chamber into cooling water.
Cause of issue:
1. Injector of a single cylinder has poor injection atomization.
2. Low fuel injection pressure.
3. There is serious oil dripping from the fuel injection nozzle.
4. Ambient temperature is too low, resulting in no combustion or poor combustion of individual cylinders.
5. Moisture is in diesel.
6. Water droplets infiltrated into individual tanks.
7. Fuel advance angle is incorrect.
Lack of motivation
1. The car is unable to accelerate, and it is difficult to increase the engine speed and speed. This is because the exhaust is not smooth, the intake air volume is reduced, and the engine power is reduced.
2. Automatic transmission vehicles often force downshifts. Due to the exhaustion of the exhaust engine, the engine power is reduced. In order to have more power output, the driver must press the accelerator deeply to make the throttle open. Therefore, the ECU controls the automatic transmission to force a downshift according to the opening state of the throttle.
3. There was slight tempering when the engine was refueling. When the engine exhaust is not smooth, part of the exhaust gas will stay in the cylinder, which will make the mixture lean and the combustion speed slow. When the intake valve is opened, the mixed vapor is still burning, so the combusted mixed gas will blow back into the intake pipe through the opened intake valve, resulting in a tempering phenomenon.
4. When the engine is rapidly accelerating or the throttle is sharply closed, you will hear the sound of the exhaust pipe “cracking”. This is mostly a symptom of damage to the three-way catalyst, and the broken three-way catalyst can easily cause engine exhaust to be blocked.
Exhaust pipe is loose
1. Press the accelerator pedal, you will hear the sound of chirp coming out of the exhaust pipe, the sound may not be very loud. The car will not be abnormal after driving, the fuel consumption will increase, and sometimes a similar sound will come from the front section. Possible cause: it is recommended to check whether the muffler and the exhaust pipe are damaged, and if so, repair it.
2. When driving at low speed, or when the accelerator is on, there will be abnormal noises under the engine, especially when the weather is relatively cold. It is recommended to raise the frame and check whether there is a heat shield between the exhaust pipe and the ground. It may be caused by the aging of the heat shield, which can be solved by replacing or removing it.
3. There is abnormal noise when turning or moving forward. The common noise when turning is often from the front wheel drive shaft where the joint has been damaged, and you hear intermittent crackling.
