Why did the French Peugeot 1.2T engine burn oil seriously after replacing the timing belt?
Hello, everyone. Today, let's talk about why the 1.2T engine of French cars will burn gasoline seriously after replacing the official belt and the solution.
In fact, the phenomenon of burning oil occurred before replacing the timing apron. The reason is that the timing belt is soaked in engine oil for a long time, and some slag of the belt will fall into the engine oil circulation system and block the engine oil circulation filter. When the oil circulation filter screen is blocked, the oil in the oil pan cannot participate in the normal oil circulation system in large quantities. At this time, the oil lubrication between the cylinder wall and the piston is lacking, and the continuous high temperature of combustion occurs during continuous driving, which will make the oil in the small hole of the oil ring burn dry and scar, which will make the piston ring lose its elasticity and lead to the failure of normal oil scraping.
However, before changing the belt, no excessive consumption was found when measuring oil. Because the oil filter screen is blocked, the oil in the oil pan cannot circulate normally. At this time, when we look at the dipstick, there is no shortage of oil at any time, which is why. Therefore, when we found that the oil consumption was serious after replacing the timing belt, in fact, the oil had already burned seriously. This is very dangerous, so this engine is prone to problems such as cylinder wall wear and cylinder pulling in the early stage.
Therefore, the problem of burning oil appeared before replacing the timing belt.
The piston ring is stuck like this. Piston rings are stuck in this order. Starting from the oil circuit, it is often unclean and burns badly. Gradually, more and more carbon is deposited in the cylinder. With the operation of the piston, it began to gradually precipitate on the piston ring. Coupled with the high temperature that is not conducive to combustion, the oil film is destroyed, and the lower part of the piston ring is also stuck by crusting oil, so the piston ring is completely stuck. Therefore, solving the problem from the oil circuit is the fundamental way. However, it is not used casually. 99.9% of the oil path cleaners have no function of releasing and cleaning piston rings, let alone using peas and the like, and have not separately cleaned the carbon deposits in the cylinders. Using an effective release agent will remove all carbon deposits in the oil circuit and release the piston ring. If you want to use it, you can use PNF cleaner to release the piston ring.
Therefore, no matter what kind of engine oil is useless, increasing viscosity will do more harm to the car, which will lead to various problems of the crankshaft and premature damage of the turbine. In the end, the engine oil will burn badly, which is not worth the loss.
After replacing the timing belt, there are two important things to be done in strict use of engine oil: the first thing is to check whether the cylinder wall is seriously worn or slightly worn. If the wear is serious, the treatment method is to change the middle cylinder or overhaul it, but we should be mentally prepared, whether it is to change the middle cylinder or overhaul it. The condition of the new car is no longer the condition of the new car. It only takes 50,000 km to 60,000 km for the piston ring to get stuck. In the state of non-new car, overhaul and replacement of the middle cylinder are likely to happen after 20 thousand kilometers, and the oil will be seriously burned out.
So this is also the reason why the French car overhaul gives a warranty of 20,000 kilometers. Another case is that the cylinder wall is not seriously worn. Maybe your car is well maintained or used carefully. For some slight cylinder wall wear, overhaul is not recommended. In addition to high working hours, there are many other uncertainties and running-in costs. Therefore, if the whole overhaul comes down, the potential loss of car damage, working hours and running-in period will total more than 30 thousand yuan. Most importantly, it is not appropriate to continue to burn engine oil seriously.
Disadvantages of overhaul: overhaul, multi-person operation and maintenance technology is not uniform, and the assembly is not good. The cold and heat values of the engine assembled at room temperature are not enough. Overhaul 1-40000, vehicle depreciation is 30000-60000. Disadvantages of overhaul: Never turn on the engine unless absolutely necessary. After opening, there were traces of disassembly, and the car depreciated a lot in an instant, and the assembly result was unknown. In the process of disassembly, the humidity, constant temperature and low temperature of the air can not meet the operating environment of the dust-free workshop. There are many people in the process of assembly, and the technology is different. Moreover, the stability of a machine can not be guaranteed because of screwing the screws, and the phenomena such as car capacity, fuel consumption and jitter are often found in the later stage. Do not disassemble the engine without serious cylinder pulling. After the overhaul, it is necessary to change the whole of synthetic engine oil for two times in a row, and find out the road conditions. It is necessary to run in independently and complete the running-in in 3,000-5,000 kilometers. The cost of engine oil and gasoline is very high, and the running-in cost of ordinary cars is 2000 yuan. Moreover, it is more troublesome to call a trailer as soon as you call the police.
Moreover, the overhauled car is not in a new state. The new car burns 65,438 438+ 10/00000 km. After the overhaul, the car condition may erupt again and burn tens of thousands of kilometers of oil seriously.
How can you loosen the piston ring without overhaul? Is it possible to achieve normal elasticity by releasing the piston ring, restore normal oil scraping function and greatly improve oil burning? The answer is yes. Will the piston ring with a slight strain on the cylinder wall be in the same state as a new car after repair? This is very difficult. The slight wear of the cylinder wall, this worn space, it is difficult for us to judge the depth with the naked eye, nor can we effectively judge the depth of the gap between the cylinder wall and the piston ring. Even after the oil ring is completely repaired, this 1.2T engine will have engine oil remaining on the cylinder wall to participate in combustion due to the clearance between the cylinder wall and the piston, but it will be much better than the engine oil consumed when the piston ring is stuck.
Therefore, after the engine of 1.2T is burnt out, it is often filled with one liter of engine oil near 4000 kilometers, which is difficult to exceed 5000 kilometers. Of course, some vehicles are in good condition and may consume one liter of engine oil to travel six or seven thousand kilometers. This depends entirely on luck, but I hope this chemical motivation is exactly the same as the repaired new car, which is impossible for most 1.2T cars.
Pay attention to two points in daily maintenance of cars.
So in the usual maintenance process, we should pay attention to the following two points:
The first point. Change the oil early, don't wait until 7500 kilometers to change it; Second, in order to prevent the engine from generating continuous high temperature, it is necessary to clean the oil regularly. Now the instructions of Peugeot OEM have clearly stated that direct injection engines should also use fuel additives, so the problem is coming. In the previous instructions of the main engine factory, it was suggested that the direct injection inquirer should not use fuel additives, which one shall prevail? ! It must be based on current standards. Why? Because the fuel used in the past, no matter the cars of three countries, four countries and five countries, is the fuel of six countries, the requirement that the main engine factory must use effective fuel cleaner now includes all Peugeot cars, even French cars, because the engines are the same.
In our daily maintenance, we should pay attention to the two points just mentioned. When changing oil at an early stage, effective fuel additives must be used, and additives that meet the saturated vapor pressure of domestic fuel changes must be used. Using effective additives and using ineffective additives are both called using additives, but their meanings are quite different.
Finally, everyone must want to know how the piston ring of this car is loosened. Additives (such as PNF technology) can be used to release the piston ring. If you really don't know this patented technology, you can directly use the general release agent, which is the patented technology.