Toyota Highlander 2:7 displacement overhaul intake manifold oil burns engine oil

The engine oil itself has a certain amount of consumption, and excessive consumption is the problem of burning engine oil. Burning engine oil is caused by the following factors, as long as the following problems are solved, burning engine oil can be solved.

There are many factors that affect the burning of engine oil, such as: fuel quality, driving conditions, driving habits, maintenance habits, etc., the above reasons will aggravate the oil consumption and lead to the burning of engine oil, making the vehicle appear:

1. Carbon deposition occurs in the combustion chamber, which makes the gas ring of the piston ring stuck, and the sealing is poor.

2. Oil sludge is generated in the lubrication system, and the oil sludge blocks 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 aging, and the sealing performance fails.

In addition, cars now have crankcase ventilation systems (exhaust valves), which can also exacerbate oil consumption if there is a problem. In the past, the problem of burning engine oil could only be solved by dismantling and repairing, but now there is a plan to solve the problem of burning engine oil without dismantling and repairing, which can be understood by taking a look.

Most of the cars on the market now burn engine oil, and most of them are French cars, German cars, and BMW cars.

The main reason for burning engine oilIt is the problem with the fittings, the wastegas valve, the valve seal, the cylinder pulling the cylinder, and the cylinder pressure is insufficient.

It is a long-term unclean oil circuit, the antifreeze is not replaced in time, the oil service life is too long, the piston ring is stuck, and the more common situation is that the piston ring is stuck.

Causes of piston ring seizureStagnation starts from the oil circuit, the oil bears the temperature at 110 degrees, and the high temperature caused by the long-term unclean oil circuit makes the oil at a temperature of 120 degrees or higher for a long time, so that the oil will fail in advance, the small hole of the oil ring is very small, and the oil inside will be dried and scabbed for a long time, and a cylinder stuck is a liter of oil for 5000 kilometers, at this time, the working conditions of other cylinders will also begin to be bad, and soon the 4 cylinders are stuck, and it will become a liter of oil for 1000 kilometers or even hundreds of kilometers. Therefore, in order to solve the problem, we must start from the root oil circuit, which is the way to remove the root.

ResolutionThere are two ways to solve the problem of burning engine oil, one is overhaul, and the second is PNF repair agent. In the case of overhaul, the cost is very high, the vehicle depreciates quickly, and the later run-in is also very troublesome. First of all, you have to find out the reason for your burning oil, and you can refer to it if you have repaired it with a repair agent before.

The foundation of the new car is good, and some parts can be replaced to resume normal use. The further back on, the condition of the vehicle is getting worse and worse, and the replacement of some parts can not maintain normal use, and the scope of repair needs to be expanded, which has reached the level of overhaul. This is also the basis for the 4S store to say that it will be overhauled.

Replacing some parts can be restored to normal use, which is a maintenance repair, and overhaul is a recovery repair. There is a focus on both. Overhaul can fundamentally solve the problems of the vehicle and basically restore the initial state of the vehicle. This is also the process that the vehicle has to go through.

I hope my answer will be helpful to you.

Brother, don't go for an overhaul yet, you'll be slaughtered, try the super American eutectic engine oil.

If it is not serious, if it is serious, it will only be overhauled.

Summary. The organic oil seepage from the Highlander intake branch pipe is generally caused by damage to the exhaust valve. In this case, the replacement of the exhaust valve needs to be considered.

Hello, I am helping you sort out the answer to your question, please wait a while Highlander intake branch pipe organic oil seepage, generally caused by damage to the waste gas valve. In this case, the replacement of the exhaust valve needs to be considered.

How long has it been since the problem occurred, and what repairs and inspections have been made.

Reply. 1. The main reason for burning engine oil is 1. The use of engine oil with poor quality or viscosity grade does not meet the requirements. In addition, too low or too high oil viscosity can lead to poor engine lubrication, increased wear of piston rings and cylinder walls, and reduced sealing performance, resulting in oil burning. 2. The matching gap between the piston ring and the cylinder wall is too large, the piston ring is improperly installed or the sealing is poor, and the oil on the cylinder wall enters the combustion chamber, causing the phenomenon of burning the engine oil; In addition, poor sealing performance of the valve seal, damage to the crankcase forced draft valve (PCV) or crankcase vent blockage can cause excessive pressure in the crankcase to cause the oil to enter the cylinder with the crankcase gas and participate in combustion.

3. Burning engine oil caused by excessive oil filling. When the oil is filled above the center line, the part of the engine lubrication process that passes through splash lubrication will be too much into the combustion chamber due to the high oil pressure. 4. Oil leakage from turbocharger.

The turbocharger is mounted at the front of the exhaust pipe and operates at a very high temperature, and the turbine and pump wheels can reach 120,000 revolutions per minute when the engine is running at full load. The turbine shaft has oil-lubricated floating bearings, and the car has one oil passage to the turbocharger. Oil leaks from pipes or bearings can allow oil to seep from the turbocharger into the exhaust pipe.

When the exhaust pipe temperature is high, the oil is baked and discharged into blue smoke. 5. There is leakage in the valve oil seal, which means that the oil leaks into the combustion chamber through the valve oil seal. Second, the method of preventing the burning of engine oil 1, the use of engine oil that meets the technical requirements of the vehicle.

Many car owners never read the vehicle manual, and they don't know what quality and viscosity grade oil their vehicles use for a few years, and there is a lot of arbitrariness in the use of engine oil. When using engine oil, one is to pay attention to the quality index, and the other is to pay attention to the viscosity index. The quality index refers to the grade above SL as much as possible, and the viscosity index should be strictly in accordance with the provisions of the viscosity index in the automobile manual, and cannot be too low or too high.

2. Avoid frequent rapid acceleration and long-term ultra-high-speed driving. When the engine rotates at ultra-high speed, it is easy to break the lubricating oil film, resulting in poor lubrication and dry grinding of the rotating parts, and when it becomes a regular operation, it will make the engine wear abnormally and burn the oil, therefore, maintaining economic speed is one of the best ways to prevent the phenomenon of burning oil. 3. The oil must meet the specifications when filling.

When the oil filling volume exceeds the center line, the repairman should be asked to pump out the excess oil, in addition, the oil volume should be observed before the next day. 4. If you find that the engine oil is burned, go to the maintenance station for inspection as soon as possible. If it is due to engine failure (such as poor piston ring sealing, valve oil seal leakage, cylinder gasket leakage, etc.), you should go to the maintenance station as soon as possible to check and repair the fault as soon as possible.

Summary. Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, I hope this service can help you. The 2013 Highlander displacement exhaust valve is normal if it sucks some oil.

As long as the normal oil consumption of 5000 kilometers is less than one liter, this consumption is within the normal range. If the oil consumption is more than one liter for 5000 kilometers, and it is very obvious that the oil is suctioned, the exhaust valve should be replaced. If you have a small amount of suction oil, there is no problem.

Good. Hello, I am your exclusive technical teacher, attentive, careful, dedicated to answering your car questions, I hope this service can help you. The 2013 Highlander displacement exhaust valve is normal if it sucks some oil.

As long as the normal oil consumption of 5000 kilometers is less than one liter, this consumption is within the normal range. If the oil consumption is more than one liter for 5000 kilometers, and it is very obvious that the oil is suctioned, the exhaust valve should be replaced. If Izuno Siga has a small amount of suction oil, there is no problem with Lu Yu.

If the normal amount of oil consumed is very small, it is considered normal.

The exhaust valve is still a little oily.

If the oil is still burning after the aircraft valve is replaced, it is necessary to consider the valve oil seal piston ring.

Good. Hmmm, okay.

Now every 2,000 kilometers it burns up.

Then consider replacing the valve seal.

Good. Hmmm, okay.

Ask about custom messages].

Summary. Hello, I am happy to answer for you: Is it normal for the old Hanlan intake manifold to have oil The answer is:

There is oil in the intake manifold, which is usually caused by condensation of oil vapors when cold. If the amount is small, it is also normal, so don't worry. If the number is too large, it will be abnormal.

There may be a problem with the oil-air separator. Solution: Clean the oil-air separator or replace the bonnet directly.

There is also a chance that the exhaust gas circulation valve of the bonnet will be blocked. In this case, the bonnet needs to be replaced.

Hello, I am glad to answer Qi Yinda for you: Is there oil in the old Hanlan intake manifold The answer is: There is oil in the intake manifold, which is usually caused by the condensation of oil vapor when cold.

If the amount is small, it is also normal, so don't worry. If the number is too large, it will be abnormal. There may be a problem with the oil-air separator.

Solution: Clean the oil-air separator or replace the bonnet directly. There is also a chance that the exhaust gas circulation valve of the bonnet will be blocked.

In this case, the bonnet needs to be replaced.

Moreover, if the amount of oil is excessive, it will inevitably increase the amount of lubricating oil in the crankcase ventilation system, which will promote the lubricating oil from the crankcase ventilation system into the intake pipe. In some engines, the Revi PC V is installed to relieve the pressure in the crankcase, and sometimes the accompanying oil is brought into the intake duct because the gas released by the PC V is reused and goes directly into the intake duct with the new gas.