JAC Ruifeng just finished the overhaul and burned the car to burn oil

Causes of burning engine oil:

1. Burning engine oil in a cold car: When the temperature of the car is not completely warmed up, the engine exhaust pipe emits a lot of blue smoke, but it is normal after the car is heated. This phenomenon is caused by the aging of the valve oil seal.

Due to the decrease in temperature, the valve oil seal of the rubber material is stiff and cannot be completely sealed, and the oil leaks from the valve into the combustion chamber and burns.

Solution: Remove the engine cylinder head and replace the valve oil seal (please rest assured, this belongs to the repair project.) The repair time is about 4-5 hours. The cost ranges from 800 yuan to 1200 yuan, depending on your car).

2. Hot car burns engine oil: After the car reaches the normal temperature, the exhaust pipe still emits blue smoke, which indicates that the piston ring has a poor seal. Due to the poor sealing of the piston ring, the oil directly enters the combustion chamber through the piston ring leakage under the action of the oil pump, and there is a phenomenon of blue smoke from the exhaust pipe.

There are several reasons for this phenomenon, such as: material aging, carbon deposition jamming, excessive wear of cylinder liners, etc.

Solution: According to the normal operation method, the engine needs to be lifted down for overhaul operations. The repair time is about 2-4 days. The cost ranges from 5,000 yuan to 20,000 yuan, which needs to be combined with your car, and the cost is mainly high in accessories.

In addition, there is another way to deal with it: if it is determined that the oil is burning in a hot car and it is not very serious (for safety reasons, the cylinder pressure test can be carried out first), you can also directly remove the oil pan, take out the piston directly, and replace the piston ring, so that the cost and time are similar to the first solution.

It is inevitable that the oil that plays a lubricating role between the piston and the cylinder wall in the engine will participate in the combustion, as long as it does not exceed one liter within 5,000 kilometers, it is normal oil consumption, and vice versa. The lack of engine oil will cause the engine to heat up badly, the car will shake abnormally, the water temperature will be high, the valve will sound, and in serious cases, it will even strain the cylinder wall or burst the cylinder.

The burning of engine oil is basically caused by piston ring stagnation. As long as there is no serious strain on the cylinder wall, it does not need to be overhauled. Changing high-viscosity engine oil maintenance is only an expedient measure to treat the symptoms rather than the root cause, and it will do no good.

The solution to burning the oil.

In the habitual thinking of car enthusiasts, they always think that burning engine oil should be overhauled, so that they not only have to bear high maintenance costs, but also bear the unpredictable risks and depreciation losses brought about by the overhaul. 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.

Now the no-dismantling technology has been very mature and gradually accepted by the majority of car owners. In particular, the non-destructive repair products containing PNF patented technology have completely gotten rid of the technical shackles of burning engine oil and having to go to the auto repair shop for overhaul, without removing a screw, repairing and releasing the piston ring stuck engine oil while driving, with remarkable results.

It is normal to burn the engine oil just after the overhaul, because the piston rings and valve seals have been replaced with new ones, but due to the different repairs, the parts are also different, such as steel sleeves, pistons, valves and other internal sections. But the most important thing about burning engine oil is that there is a running-in period between the new piston ring and steel sleeve, valve oil seal and valve, so it will cause the car that has just been overhauled and burns a little oil, so you should drive for a period of time, such as about 2 to 3 months to see if the engine oil is still burned. If it is still burned, it may be a loss or a problem with accessories or something else, I hope it can help you, thank you.

It is likely that it is a problem with the assembly or the quality of the accessories.

You can check whether the lower gasket is damaged, and whether the valve oil seal is damaged.

Start for half an hour and see.

JAC Refine will not burn engine oil in the early stage, and the oil that will burn engine oil in the later stage will be consumed to a certain extent. Excessive consumption is the problem of burning engine oil. There are several factors in burning oil, as long as the following problems are solved, burning oil can be solved.

There are many factors that affect oil combustion, such as: fuel quality, road conditions, driving habits, maintenance habits, etc. The above reasons will exacerbate fuel consumption, lead to fuel burning, and cause the appearance of the vehicle

1.Carbon deposits occur in the combustion chamber, causing the air ring of the piston ring to jam, resulting in poor sealing. 2.

Oil sludge is generated in the lubrication system, which clogs the oil return hole of the oil ring and weakens the oil scraping performance. 3.Wear occurs between the piston and the cylinder wall.

4.The valve seal is corroded and aged, and the sealing performance fails. If the oil is burned by the wind, poor cylinder sealing is the main reason for burning the oil.

The poor sealing performance of the cylinder is mainly due to the excessive gap between the piston and the cylinder wall, the improper installation of the piston ring or poor sealing performance, and the oil on the cylinder wall enters the combustion chamber, resulting in oil combustion. In addition, poor sealing of valve seals, damaged crankcase vents or clogged crankcase vents can cause excessive pressure in the crankcase, which can lead to oil entering the cylinder with crankcase gases and participating in combustion. Cold-boiled engine oil:

Before the temperature of the car was fully warmed up, a lot of blue smoke came out of the engine exhaust pipe, but after the warm-up it was normal. This phenomenon is caused by the aging of the valve seals. As the temperature of the valve seal decreases, the rubber valve seal becomes stiff and cannot be fully sealed.

This phenomenon occurs when the oil leaks from the valve into the combustion chamber for combustion. If it is determined that the oil is burning by the hot car, and it is not serious (for safety reasons, the cylinder pressure test can be carried out first), the oil pan can be directly removed, the piston can be directly removed, and the piston ring can be replaced. In this case, the cost and time are similar to the first solution.

Summary. Although the handbrake lever is returned, the cable is not returned thoroughly, and the four-wheel brake is checked. Run for about 10 minutes, spray some water on the tire pot to see if the pot is hot.

There is also an electronic pump in the tank, and the filter bag may have too much internal organs, resulting in insufficient oil supply.

Is the acceleration abrupt? If you have not washed the engine in the past few days, the spark plug may be watery (if it is really as you said, the relevant parts are fine).

The JAC Ruifeng (gasoline car) engine cannot run after overhaul.

1.Although the handbrake lever is returned, the cable is not returned thoroughly, and the four-wheel brake is checked. Run for about 10 minutes, spray some water on the tire pot to see if the pot is hot.

2.There is also an electronic pump in the tank, and the filter bag may have too much internal organs, resulting in insufficient oil supply. 3.

Is the acceleration abrupt? If you have not washed the engine in the past few days, the spark plug may be watery (if it is really as you said, the relevant parts are fine). 4.

Let's see if there are any of the above questions.

No. The overhaul has been dismantled**.

The timing and steel pressure are normal.

This is a common problem after the engine overhaul, the main reason is that the parts replaced after the overhaul are tighter, need to run in, it is recommended that when there is no task out of the car, run the engine with idle speed, observe the water temperature every hour, if the water temperature does not change, turn off the engine when the water temperature is too high, start the car after the water temperature is reduced, and continue to run at idle speed. It is best to idle for more than 2 hours a day, be sure not to drive at high speed when you get out of the car, it is best to keep it at half of the maximum speed, it is best not to turn off the engine when stopping, and let the engine idle until you feel that the engine power is normal!

Just sixty or seventy yards.

The right pro after the overhaul is the common problem is the lack of motivation.

It will make the driver feel that the car is very meaty and cannot be driven.

There is no fault code for computer tuning.

The car is not faulty, and the computer will definitely not report the fault code.

I guess you're going to have to grind it into one phase to get better.

Okay thank you. You're welcome dear.

Summary. Dear, this question is up to me, it takes a little time to type, please be patient, thank you!

The engine speed of the JAC Ruifeng hot car cannot be raised.

Dear, this question is up to me, it takes a little time to type, please be patient, thank you!

Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, for you to find the corresponding problem solutions and solutions! Your question is: The engine speed of the JAC Ruifeng hot car can't be raisedHello, it mainly depends on whether the water temperature sensor is too high, causing the engine to enter the protection mode.

This is learned by computer in special function dental training.

The speed is more than 2000 rpm.

Doesn't it have anything to do with this glitch?

There is a relationship, learn first.

The speed required is 4500, and now the speed of the hot car is up to 3000, so I will change the position and try it.

After the change, Tooth Xun learns.

After changing, the speed can't go up.

Did Tooth Rush learn? That fault code is gone.

Before, it was.

If you can run, that's a problem with overhauling the line.

Not a problem with high-pressure pumps.

Because the high-pressure pump can't come to fault suddenly.

You can strip the oil under the high-pressure pump to shine.

If smoke comes out after the strip is finished.

It's not a matter of high-pressure pumps.

However, a high-pressure pump can compensate for the lack of power.

The engine number of JAC Refine naturally aspirated is HFC4GA1-C. Let's be honest! It is said that it is a self-developed engine, but it is actually the Mitsubishi 4G69 produced by Shenyang Airlines, but the manufacturer of JAC has changed its name.