The old Jetta car is smoky, and the hot car is fine

Hello. This is the reason for burning engine oil. If the blue smoke from the cool car should be the cause of the valve oil seal, it is recommended that you replace it, I hope it can help you. I wish you a happy life, [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, this problem is that the valve oil seal is aging, the oil in the cylinder head leaks through the valve oil seal to the combustion chamber for combustion, and the rubber of the valve oil seal rises when the car is hot. Hope I can help you [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, that's the engine burning oil, it's time to overhaul the engine, ** in four thousand yuan, the region is different, the price is slightly different. Or to the local **, I hope I can help you, I wish you a happy car! [If you have a problem with the car, ask the car master.]

4S shop professional technician, 10 minutes to solve. 】

Hello. The blue smoke of the car is the phenomenon of burning engine oil, and the blue smoke when the car is cool, which should be caused by the aging of the piston ring and valve oil seal, and the oil quantity can be checked frequently. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Because when the car is cold, the engine itself is cold, the diesel fuel can not be fully burned, a small part of the fuel becomes oil and gas and discharged, the smoke will be large, and the water temperature of the car will come up, and the smoke will be smaller, and the diesel engine will be like this.

Hello、It's very normal to be fine【There is a problem with the car, ask the car master.】 4S shop professional technician, 10 minutes to solve. 】

Hello, this is normal. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, you are a cold car burning engine oil [car has a problem, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Summary. Hello dear for your question. Dear, the reason why the Jetta car starts the blue smoke:

1. The valve oil seal is aged, damaged or damaged, and the gap between the valve and the guide is too large; 2. The crankcase forced ventilation valve (PCV) is blocked or damaged, resulting in the exhaust gas in the body being blocked, and the force pressure of the crankcase increases, resulting in part of the oil channeling into the combustion chamber to participate in combustion; 3. The internal wear of the body, such as excessive wear of the piston and cylinder wall due to the use time or improper maintenance, the oil enters the cylinder to participate in combustion; 4. The piston ring is counterpartial, the end and side clearance are too large or stuck, and the piston ring is seriously worn; 5. The air filter is caused by the blockage of the air intake part, the mixture is too thick, and too much oil is brought into the combustion chamber to participate in combustion.

Jetta car cold start + blue smoke what's going on.

Hello dear for your question. Pro, the reasons for the blue smoke emitted by the Jetta car cool car start: 1. The valve oil seal is aged, damaged or damaged, and the gap between the valve and the duct is too large; 2. The crankcase forced ventilation valve (PCV) is blocked or damaged, resulting in the exhaust gas in the body being blocked, and the force pressure of the crankcase increases, resulting in part of the oil channeling into the combustion chamber to participate in combustion; 3. The internal wear of the body, such as excessive wear of the piston and cylinder wall due to the use time or improper maintenance, the oil enters the cylinder to participate in combustion; 4. The piston ring is counterpartial, the end and side clearance are too large or stuck, and the piston ring is seriously worn; 5. The air filter is caused by the blockage of the air intake part, the mixture is too thick, and too much oil is brought into the combustion chamber to participate in combustion.

Pro, if there is only a small amount of blue smoke coming out when the car is started cold, you can continue to use it for the time being, and the general situation is mostly the failure of the valve seal. Due to the long-term use of the valve seal, the valve oil seal is aged and worn severely, and it has been unable to achieve a good sealing effect. When the engine is not running for a long time, the oil flows into the cylinder through the valve oil seal under the action of gravity.

When starting the engine, the oil in the cylinder will burn under the action of high temperature and high pressure to produce a large amount of blue smoke, this fault only needs to replace the valve oil seal. After this kind of failure, it is recommended that you check the oil level every half a month, if you find that the oil consumption has increased significantly, it is best to go to the 4S shop for on-site maintenance in time.

Summary. Dear, hello, the old Jetta hot car is difficult to start and emits black smoke, and the relevant treatment methods are as follows. The first is that there is a problem with the vehicle's oxygen sensor, which is caused by this phenomenon, you need to check the oxygen sensor first, and if there is a problem, it needs to be replaced.

The second is that there is a problem with the relevant water temperature sensor in the hot car state, which is caused by this phenomenon, and it is necessary to use the computer to read the fault** and data, for example, there is a problem that needs to be replaced. The third is the problem of the fuel pump, which is caused by this phenomenon, and the pressure of the fuel pump needs to be tested, and if there is a problem, the fuel pump needs to be replaced with a new one. Dear, I wish you a happy life, if you have any questions, you can continue to consult, I will answer for you as soon as possible.

The reason why the old Jetta hot car is difficult to start emitting black smoke.

Dear, hello, the old Jetta hot car is difficult to start and emits black smoke, and the relevant treatment methods are as follows. The first is that there is a problem with the vehicle's oxygen sensor, which is caused by this phenomenon, you need to check the oxygen sensor first, and if there is a problem, it needs to be replaced. The second is that there is a problem with the relevant water temperature sensor in the hot car state, which is caused by this phenomenon, and it is necessary to use the computer to read the fault** and data, for example, there is a problem that needs to be replaced.

The third is the problem of the fuel pump, which is caused by this phenomenon, and the pressure of the fuel pump needs to be tested, and if there is a problem, the fuel pump needs to be replaced with a new one. Dear, I wish you a happy life, if you have any questions, you can continue to consult, I will answer for you as soon as possible.

Dear, hello, the old Jetta hot car is difficult to start and emits black smoke, and the relevant treatment methods are as follows. The first is that there is a problem with the vehicle's oxygen sensor, which is caused by this phenomenon, you need to check the oxygen sensor first, and if there is a problem, it needs to be replaced. The second is that there is a problem with the relevant water temperature sensor in the hot car state, which is caused by this phenomenon, and it is necessary to use the computer to read the fault** and data, for example, there is a problem that needs to be replaced.

The third is the problem of the fuel pump, which is caused by this phenomenon, and the pressure of the fuel pump needs to be tested, and if there is a problem, the fuel pump needs to be replaced with a new one. Dear, I wish you a happy life, if you have any questions, you can continue to consult, I will answer for you as soon as possible.

The blue smoke from the engine is basically burning the engine oil, and there are many reasons for this, roughly the following situations:

1. If the back pressure of the oil return oil circuit of the supercharger is too high, check whether the supercharger is leaking and whether the oil return pipe is blocked.

2. The exhaust gas valve is damaged, and the oil and gas cannot be separated, and it re-enters the combustion chamber for combustion.

3. The valve oil seal is aged, damaged or damaged, and the gap between the valve and the guide is too large.

Fourth, the oil exceeds the upper limit, so that the crankshaft throws the oil into the combustion chamber to participate in the combustion during high-speed operation.

5. The engine is severely worn, resulting in too large a gap between the piston and the cylinder wall, and the oil enters the combustion chamber through the gap.

Sixth, the piston ring is stuck, and the cylinder wall oil participates in the combustion. This is the reason why most cars burn engine oil.

The solution to burning engine oil.

Dismantling the engine for overhaul will destroy the airtightness and precision of the engine. And there is a possibility that the engine oil will burn again after tens of thousands of kilometers, so overhauling the engine is not sustainable.

With the progress of science and technology, the current dismantle-free repair technology has been very mature and has gradually been recognized and accepted by the majority of car owners. It not only saves the cost of car maintenance, but also protects the original car accessories. With exclusive patented technology, the company has universal non-destructive repair technology, which repairs and releases piston ring stuck oil while driving, and the effect is remarkable.

When starting, the blue smoke may be burned oil, and the cause needs to be checked for maintenance.

This fault is the case that the mixture is too thick under the condition of cold start, if the black smoke of the exhaust pipe is more obvious after starting, it is recommended to go to the maintenance shop to check the fuel system and air intake system, if the fuel injector is poorly atomized or the air intake system has too much carbon deposit, it will cause this case, otherwise it can be cleaned.

Causes of black smoke from car exhaust pipes:

When the engine is old, look at the air flow meter, black smoke means that the engine is not completely burning, there is more oil and less gas, and the mixture is too thick; Ignition work is not good, etc. There are many reasons for this, the fuel system, the ignition system and the engine.

The idle speed is unstable, it is recommended to check the working condition of the spark plug.

The fault phenomenon of black smoke is: when the engine is working, the exhaust pipe emits black smoke, and can smell the pungent gasoline smell, which is more obvious when accelerating. The cause of the failure may be: the mixture is too thick; The spark plug is not working well; Ignition is too late.

The cause of the failure may be: the oil level is too high; The cylinder compression pressure is lower than the specified value; The gap between the piston, piston and cylinder barrel increases.

2. The original fault phenomenon of white smoke is: when the engine is working, white smoke comes out of the exhaust pipe. The causes of the failure may be: the fuel contains moisture; There is moisture in the cylinder or muffler.

Hello! This problem should be caused by the fuel injector dripping oil, the residual pressure of the gasoline pump exists after stopping, and the fuel injector dripping oil, the fuel in the cylinder is too much, the spark plug is flooded, so it is difficult to start, and black smoke is emitted after the car is loaded due to too much fuel.

Hello, this is caused by weak ignition or poor cylinder sealing. You can replace the spark plug to clean up the carbon deposits in the cylinder.

1. The exhaust of the vehicle has blue smoke accompanied by a sour smell, which proves that the engine burns engine oil.

Second, the 04 Jetta uses a self-priming 8-valve cast iron gasoline engine with a rated oil volume, and it is normal to have a certain oil loss after the age.

3. When the oil sinks into the oil pan when the car is cold, the start is not completely in the working state and is not easy to penetrate into the combustion chamber in a short time, so it is not burned, but it is also the time when the engine is most damaged.

Fourth, it is recommended to replace the oil with a higher viscosity, and regularly self-check the oil level, if there is no loss to lower than the minimum value of the tung mold in a maintenance cycle, you don't have to worry about it.

Hello, need to repair the engine.