Do you need a row of a new car or not? For many years, many years are arguing both drivers and representatives of machine-building companies. Someone says that the tests that the car takes place at the factory more than enough. Others argue that the car consists of hundreds of various nodes, and that the whole system will work as a clock, you need to run.
In fact, most parts of the car do not need run. Modern technologies make it possible to achieve extremely accurate interaction of all parts. The only exception is the engine. This is the most important part of the car, and it most needs additional impact.
Each attentive motorist will have a question, what are representatives of companies argue among themselves? In fact, there are two camps at any car enterprise. The first includes technical experts. Their task is extremely simple. The car must last as long as possible without any breakdown.
Another thing is the managers. Their task to sell the car, and what will happen to her, as if not their problem. No, do not think, the company always gives a guarantee on the car. Moreover, the driver can even choose, the unit of measurement: kilometers or years.
In 99 percent cases, the car drives the declared distance. But what will happen then? Officer helps to largely extend the service life of the car. The main thing is to do everything according to the instructions, and the vehicle will serve you for a long service.
Process physics
To understand what we need run-in - Consider the process from the inside. In the process of work, the details are torn to each other. This is primarily necessary for the bearings to work as efficiently as possible. Also concerns cylinders and pistons.
Many specialists will return that there is an oil film, and she will definitely protect all the parts of the car from breakage. Undoubtedly, they will be right, but not to the end. The fact is that the oil coating is extremely low reliability and "breaking" at high loads. As a result, the details receive damage and wear out faster.
To prevent premature wear, and we need running in a car. In the process of driving on a clearly defined algorithm, all nodes and spare parts of the machine are polished to the mirror glitter.
Machine manufacturers know about this effect. Therefore, the plant is cold running. Servo drives allow you to significantly increase the pairing of parts. That's just the most modern equipment does not give the same effect as running in.
Running in auto
Instruction
For running, you need to drive at least 500 kilometers. Some car experts say that 300 is enough, but it is better not to risk. At the same time, the interface of the details was maximum to perform the following instructions:
Of course, recommendations for running a car there are many, and all of them need to be performed if you want the car to be faithfully served for many years. Nevertheless, remember one paradigm. The main thing in the run-in is smoothness Avoid any sharp turns, speed set of speed and sharp braking.
Run through transmissory
The rolling in the car transmission is also very important. The fact is that this device directly interacts with the engine, and that the systems work in unison must adhere to a few simple rules:
- Avoid off road.
- On the first five hundred kilometers, forget about the front axle.
- While the car does not pass 800 km - do not use the trailer.
- Sharp braking is strictly prohibited.
Total four rules on the first eighties kilometers will allow you to achieve perfect synergy between the engine and transmission.
I will prolong the service life of the car
To extend the life of the car, in addition to running, you need to take care of high-quality fuel and lubricants. Follow only at proven stations. Give preference to refueling one network. Use good oil.
If you do not have the opportunity to use high-quality fuel and lubricants. Suppose you often travel around Russia and refuel away from the city - think about additives.
Important! We regularly attend the service centers. Special relevance This procedure acquires after the expiration of the warranty.
And if not rolling?
Every driver should know what his car threatens the absence of running. Unfortunately, the whole thing is to "calculate" the benefit of this operation is extremely difficult. The response of official dealers, and not technical specialists, is reduced to the fact that you can immediately operate the machine on the limit revisions.
Unfortunately, after 2-3 years, it is extremely difficult to determine why the engine has failed. Indeed, in the course of operation, many factors affect it, and find out what exactly led to breakage difficult.
Important! In the first thousand kilometers, manufacturers are recommended to refrain from high loads, as this can lead to engine overheating.
However, even if you fully ignore the battery and immediately start riding at limit speeds - nothing happens. All that you threatens at first this is an increased oil consumption. But in the future the lack of running can lead to premature wear of parts.
Tip! If you buy a car for 2-3 years, you are definitely not needed, if you want to use them at least 5-7 years, it is better to show restraint in driving at least the first thousand kilometers.
If the run-in is really effective, why machine-building brands did not come up with a special mode
Contemporary cars are simply stuffed with a variety of electronics. It is not surprising that drivers are wondering why machine-building companies did not invent a special operation mode that could limit the engine activity on the top one thousand?
The answer to this question is better to divide into two parts. In the first one you need to tell that some restrictive mode in modern cars still have, however, it is not running, but the so-called transport program.
When the car is transported from the factory to the dealer center, savings regime is activated, allowing you to keep the battery charge. It is possible to disable it only in the dealer center using special equipment.
On the other hand, the program controlling the run-in is considerable difficulty. The development of appropriate software and its implementation will cost a considerable amount, which will significantly increase the price of the car. It is much more practical to run the running on your own.
Attention! There is also a third aspect of this issue. But it is not customary to talk about it. Automotive companies are interested in buying new models, and for this old should fail.
RESULTS
Of course, prove the performance of the runoff is difficult. Since no company is interested in carrying out expensive research, which can be documented by the effectiveness of this procedure. But drivers who want their car to serve for a long time, better show caution on the first thousand kilometers.
For a long time in the world there are discussions on the run-in new or run. What do you think, do you need running in modern cars? A few years ago, this question could be obvious to answer "yes." But with the achievement of the latest technologies in the automotive industry, more and more people are leaning to the opinion that it is not necessary to run the engine. Let's find out if you really really drive?
First, run the engine or not, each owner of the car decides itself. For example, if someone took the car into lease, then it is obvious that it will most likely not take care of the engine. If the car is in our property, then we, as a rule, we take care of it. But is it necessary to run on modern cars?
Engineers and other experts argue that there is no. So, the routine is needed only for our psychological tranquility?
But why then in his manual for the operation of new cars directly recommends that the first 1200 or 2000 km limit the maximum engine speeds (no more than 5,500 rpm), and not exceed the speed of 170 km / h?
That is, the BMW company officially recognizes that the engine running is needed until a certain kilometer appears on the car odometer.
The company BMW is not the only automaker, which still recommends the owners to observe the routing mode of cars. There are many more car brands that also in the user manual advise to run the machine's power unit.
In this regard, we decided to figure it out in this matter, and to understand whether the running in or not is needed. First, let's first find out what engine run is and why many years ago, without exception, manufacturers of vehicles obliged the owners to hold its certain time.
The routing process itself is the process of ticking the various components of the car to each other. For example, piston rings and cylinder walls before reaching the optimal levels of interaction and performance should work together for some time, entrusted to each other. Until recently, this fact no one questioned. But today, many engineers and experts declare that such a trigger of the engine components is no longer needed. In their opinion, in the automotive industry, they allow them to achieve an incredible accuracy of fitting components to each other today. Microscopic accuracy allows you to cancel runoff.
Experts believe that in the past, drilling and other machines that were used in the production of engines were not as accurate as today. As a result of the gaps between the details, in the process of the first 3000-5000 kilometers, the parts of the engines, having gripped to each other, formed a metal chips, polluting engine oil.
Yes, today the tolerances between the details have become less thanks to high-precision machines. But, nevertheless, it does not speak directly about the fact that the runoff is not needed. After all, the tolerances and errors are still there. Nowadays, the dimensions of the parts are also not perfect and, probably, will never be perfect towards each other.
In addition, the perfect interaction of engine parts is possible only after certain engine operation cycles in the worker (hot) state. That is, the metallic components of the engine, it is necessary for a short time, during which they will become optimal in relation to each other.
In general, as you see, there is an opinion that the running in is not needed, but there are many arguments in favor of the fact that the runoff is extremely necessary. And the discussions in this area continues to this day.
So unambiguously answer the question, whether the engine run is needed, you will not be able to answer accurately. For this you need expensive research and long-term tests.
In general, modern engines, according to many engineers who work in automotive companies, is required to run on average 1000 kilometers. In the past for running the engines, it was required to drive much more kilometers before it was safe to start using a power unit to full power.
But if you do not want to believe that running in modern cars in principle is not needed, and you want to be calm for the engine's engine, then we offer you that will keep your peaceful peace of mind after purchasing a new car or after the engine is the bulkhead.
Keep medium engine speed: Depending on which engine in your machine (gasoline or diesel), after buying a new car or after the engine's bulkhead, you will have the first time to limit the operation of the car at high speed of the power unit. As a rule, diesel engines operate at lower revs. Therefore, if you have a gasoline model, then the first 1000 kilometers do not exceed 3500 rpm. If you have a diesel car, then do not exceed 2500 rpm.
Be careful with the gas pedal: The first 1000 km be attentive when working with a gas pedal. Try not to exceed the above engine speed. Especially be careful when accelerated. Also consider your ride style first 1000 kilometers. You must remember that due to the restriction you will not be able to fully use the power of the engine. Therefore, when maneuvers on the road, take into account this in order not to create an emergency. For example, be careful when overtaking.
Try not to ride at minimum engine speeds. Your task is to pass the optimal run in the first 1000 kilometers. By supporting the average engine speed, you accelerate the process of wrecking the piston rings and engine cylinders, and also accelerate their sealing process to each other. At the minimum engine speed, you will not succeed in only 1000 km, to make an optimal runoff, since there will be no necessary high pressure, which is formed due to gases allocated in the process.
Change the oil through 100 kilometers: If you have the opportunity, we recommend you after a run at 100-200 kilometers to change the oil in the engine. As we have already told above, the routine is needed that the details go to each other and the factory clearances are reduced between them, which are formed due to the errors of the equipment used in the manufacture of engines. As a result of the wipes, metal chips are formed. These pieces of metal are present in a new engine at 100 kilometers. Changes the engine oil, you remove the metal chips.
Ideally, you will also need to change the oil about 1000-1500 km. Thus, you fully clean the engine from metal elements that were formed as a result of the wipes of new engine components. After a double shift, your engine in the engine will be clean.
All these tips are, of course, are directed primarily to the fact that you remain calm that nothing happens to the car engine, and it will serve for a very long time.
But whether the run-in is needed to give a definite answer. As we have already told disputes in this area still continue. Nowadays, modern engines, of course, have become better, more efficient and technologies. Modern equipment allows you to create reliable and high-quality strength aggregates. The amount of production marriage in the process of manufacturing engines has decreased by 12 times.
True, in recent years, there is not a very rainbow picture. Most automakers create engines that work reliably and efficiently only. Next, the reliability of motors begins to fall. Thus, automotive companies protect themselves from financial problems when warranty repairs. But after 3 years of operation of the car and run 100,000-150,000 km, the reliability of power units leaves much to be desired.
Over the past few years, the number of complaints of car owners increases in geometric progression. Most likely, many motorists will have to forget about the bulkhead of the engines on a large run. Alas, modern engines can no longer boast a long service life.
So if you are going to use the new car for a very long time, then from how you make the engine running, it will depend on its maximum resource. And let even scientists, experts and other specialists will scientifically prove that the engine run is not needed, for their calm, perhaps still will have to run the first 1000-2000 km to run up before start using the engine on full power.
Do I need to run the engine after repair? If you ask a similar question, you can hear in response to a variety of opinions ... Some "specialists" argue that we don't need modern engine motors: "Everything is done with such accuracy that there is nothing to be worked out." Another Motorist will say that it is possible to qualitatively run the engine only on a special booth, under the instrument control. Who is right?
We will try to clarify this question based on practical considerations.
First, running in after repair is required!
Despite the progress of technologies, even if all sizes are accurate and the highest possible surface quality is obtained, the work of the engine parts is inevitable. After starting the engine, the "alignment" of roughness on the surfaces of parts occurs, for which it takes some time. In addition, as if diligently, with the highest possible cleanliness, the motor was not collected after the repair - it is impossible to remove all pollution from the surfaces of parts. And they are finally removed just when running.
Secondly, the stand running is the best solution.
However, motor brake stands are rare and used mainly for engines. However, even lease of such equipment greatly increases the cost of repair.
Therefore, the most common practice is to establish a repaired engine on the car and rolling through it in motion. And then the most common mistake is to start the motor after repair and leave it for a long time at idle. It turns out that the car stands on the spot, and the freshly broken motor works with hours ...
Is it possible to do that?
It is impossible! The short work of the motor at idle, after repair, is needed only for primary check and adjustment. "Hand" the motor is in a similar way unacceptably unacceptable, since the engine damage is inevitable. Why? Because, at idle the bearing of the crankshaft, and other friction pairs are poorly supplied with oil, as the oil pump does not work "in full force."
The fact is that the oil, among other things, also takes the heat from the details, that is, cools them.
So it turns out that the supply of oil to the friction pairs is insufficient, and at the time when, due to the acquisition, the parts are heated stronger than usual. In addition, when the head of oil is small, there are bad oils are washed with channels. And the dirt remaining after repair - metal dust and other wear products - are not washed out of them, but remain in the lubrication system and then "introduced" into the surface of parts, especially made of light alloys. In addition, the motor is not cooled as it should also be due to the fact that it is not blown by the opposite air flow.
As many years of experience shows - in the first 6 hours of operation of the engine, the wear of the developing parts is very large! Then, from 7 to 10 hours, wear processes slow down. And after 15 engine work hours, wear processes are included in their "normal" frames. Therefore, running the motor in motion is very careful.
- the first 600 km (10 hours) ride, if possible, with minimal load and on the average engine speed - from 1/4 to 2/3 of the position of the gas pedal (but at the same time, avoid low revolutions - driving in the dash);
- after 600 km of mileage and up to 1000 km can already be quietly in the second-third gears "unscrew" the motor, for 2-3 seconds, to the revolutions about 1000 less than the nominal. The engine does not need to be "twist to the ring" when running. Because on high speed, inertial forces in a crank-rod mechanism are higher than gas. In particular, therefore piston rings, in the upper and lower dead points shifted more than usual, thereby increasing wear;
- on the mileage of more than 1000 km, you can already leave on the highway, gradually increasing both speeds and the load on the engine, as long as the engine does not start to respond to the gas pedal. But here it is worth keeping the speed of 20-30 km / h below the maximum, and even better - by 40-50 km / h less "maximum flow".
Do not forget about the constant check of the oil level in the engine during run-in - due to increased flow.
Be sure to check the oil level and add it if necessary, after the first 50-100 km of run. And then check the level regularly over the next 500 ... 1000 km of run. During this time, all dirt and wear products, which accumulated in the engine during running, will ultimately be in oil and oil filter. Therefore, after 1000 ... 1200 km of mileage, the engine oil, and the oil filter, must be changed.
Another note: and for running, and for subsequent operation it is worth using the same grade oil.
The idea to use for running oil cheaper oil is bad, there is no benefit from it. Siemifier savings can turn into subsequent serious expenses.
We hope that these simple rules will help you achieve a long and reliable operation of the renovated engine.
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The automotive engine is a complex unit in which hundreds of elements should be coordinated so that its characteristics correspond to the declared. When buying a car, her future owner first looks at the motor, its power and feedback on the operation of such models of engines from other owners of identical power units.
Often on the forums, on social networks and on the websites on the Internet you can find contradictory reviews about a particular engine. Some drivers say that it will be able to pass hundreds of thousands of kilometers without any complaints, others say that the motor can quickly fail. They are based on their own experience, and their results will differ, depending on:
- Parties of parts used in the engine;
- Quality of inspection of the motor before it is installed on the car;
- Driving manners;
- Primary engine running.
The last item is many buyers of the car pay little attention, and in vain. Competently executed engine running is capable of extending the service life of its units.
What is engine running
The rolling in common is called the allowable operating modes for the first few thousand kilometers, which manufacturer of the car most often indicates in the technical manual. It is believed that modern cars do not need a motor running, but it is erroneous. Even with the improvement of the technologies for the production of car elements, the engine is perfect once again will not work.
Here we approach the definition of the concept of "running in". Under it drivers understand the process of wrecking the parts of the car to each other. Most often, the runoff is considered in the aspect of the motor, but on a new car it also requires suspension, brakes and other aggregates. During the operation of the car in the first few thousand kilometers, the parts in it are developed, that is, they are torn to each other. Microscopic irregularities as a result of friction are eliminated, thereby appearing the density of the fitting parts of the machine, and its motor efficiency is suitable for the highest possible values.
How to ride a new engine
One of the most difficult issues that can be set by an experienced motorist is the preparation of the exact instruction on the running of a new motor. The fact is that the unified method of engine running, which has not so long since the conveyor, simply does not exist. You can call several key recommendations that are suitable for each motor during running in:
Most car manufacturers indicate in the technical passport information about the permissible modes of operation of the machine in the first few thousand kilometers. Adjust the tips in the above, in accordance with the manufacturer's recommendations.
Despite the desire to experience a new car, do not allow its sharp jerks during the running time period. Naturally, many drivers want to check whether the car is really able to dial the speed from 0 to 100 kilometers per hour in the manufacturer's referred to the manufacturer. Make it unlikely to succeed on a new motor, and in the stressful situation it will fall, which can affect his durability.
Engine running machine after repair
Not only new motors need run. She needs to expose the engine in which a series of details on new, if they interact mechanically with old elements. That is, the replacement of the washer tank, sensors and similar parts will not require the engine running after repair, while when installing new mechanical elements: sleeves, pistons, rings and others, rolling the motor.
How long to run the motor after repair
Depending on the complexity of the work that was performed during the repair of the engine, the duration of the engine running. Conditionally can be divided by the duration of the runoff as follows:
The process of engine running after repair is no different from running a new motor, with the exception of its first start.
How to perform the first engine start after repair
The so-called Motor Post Monitor Start is a heavy process, especially if the repair was not capital, but the key details changed. So that the first start of the engine passed the smoothly as possible, you must execute the following actions:
Important: With the posturperary launch of the engine, it is impossible to try to increase the oil pressure of the gas pedal. A similar first launch can be the last for the engine, and it will again need a serious repair.
- If there are no problems with oil pressure, wait until the car warms up a bit, and at this time, make sure that there are no leaks of various technical fluids from it;
- When the engine temperature is suitable for 80-90 degrees, stop it and allow it to cool to 40-50 degrees, after which again start the scheme described above. It is necessary to do at least 5-10 such launches of the motor, after which you can travel to the road for running the engine in real conditions.
The correct run in the new motor or renovated allows you to significantly extend its service life.
Most often, happy owners of just a purchased car literally dust blowing off it, but special attention should be paid to the "heart" of the car. The new engine, or the motor, recently experienced overhaul, needs gentle operation. And only after passing, running can be used in standard mode with all the required loads.
What is engine running
The engine running is made to call the process of ticking parts, which constantly interact with each other, working in high temperatures. In fact, the run-in should pass all the mechanisms that have conjugate moving parts, because only so, working under a small load, they will be able to "prepare" to the conditions in which they will have to work throughout the service life. Simply put, the creating moderate friction helps the items to take the final form, and in the future it should not change significantly.
The first and most important stage of the runoff of the power unit passes after a few hours after its installation on the vehicle. So, in the process of the first launch, the completion of compression and oil-chained rings, which are in contact with the cylinder wall are performed. We have no special name to determine this process, while the English-speaking countries use two different terms at once. The first stage is called "Engine Break-in" (It can be translated as "commissioning"), and the subsequent final processing is called "Engine Run-in", which actually provides for direct running of moving parts.
It should be noted that the universal instruction that explained exactly how the engine runs should occur until there is. Moreover, most car owners do not need to be engaged in this process independently, since all the necessary manipulations are performed by specialists still at the factory, and the car comes to the buyer with an already rolled engine and oiled. However, a certain amount of information is still available. In particular, in the matter of the degree of load during the runningout of the motor, the opinions of experts of various manufacturers are somewhat diverge. Oddly enough, the lack of consent is explained by the general increase in productivity over the past few years.
The fact is that the quality of engine parts has increased significantly, although the consequences of incorrect commissioning are observed today. If a regular mechanic could detect the cause of the damage on old power plants, then for a good orientation in modern cases, the engine damage due to incorrectly, the specialist should have considerable knowledge in the field of physics.
The cars produced today differ from their ancestors to the high sensitivity to the quality of fuel and oil recommended by the manufacturer. Therefore, the engine run is carried out only with the use of liquids specified in the technical manual for the operation of the vehicle.
Interesting fact! The largest engines are ship. The diameter of their 14 and cylinders corresponds to 960 mm, and the installation power reaches 108920 hp.
What is the engine running
To fulfill the details of the details of the new or just a repaired engine, it is best to use a special bench, which will help to obtain the most reliable data on the status and activity of all assemblies of the unit. However, this is not the only option for a similar procedure, and the engine running can be performed in other ways (meant after the overhaul of the power unit). But first things first.
The cold run, for which the stand is used, provides for the connection of the motor to the electric motor using a coupling. The latter can change the frequency of rotation, which allows the engine running in soft mode. The operation of this device is monitored by a special program installed on the stand of the stand. It also receives data from the sensors, processes them and selects the rotation mode. These sensors remove temperature testimony, thereby not allowing the engine to overheat.
The cold run of the motor with the use of the stand is the most acceptable technology that allows you to get a quality result and a good tick of the details of the power plant. However, it is necessary to understand that for a similar procedure will have to pay a certain amount of money. If you do not have a desire to contact the specialists who have the aforementioned equipment, then you can use another method of cold running (without a stand).
In this case, the engine rotation will occur due to transmission from the wheel of the car (the machine is cling to another vehicle and towed on the third transmission without turning on the engine). In addition, the system should have a sufficient amount of oil required for efficient runoff, and coolant.
It must be said that the described version of the cold lapping is very far from the ideal, as it is difficult to control the heating of the rubbing surfaces of the motor. It is often used and running a hot-type engine (the car stands all the time in one place, but the motor continues to work). The same option is used and when working with a stand, only in this case the hot tin is performed on the removal of the motor. To begin with, the engine is allowed to work at idle (no more than 3 minutes), and then devastating and allow you to completely cool.
The procedure should be repeated several times, and after the short-term cycles are completed, the unit is started for a longer time (40-50 minutes) in idle mode. In this process, there is a prerequisite monitoring of temperature indicators (should not exceed 80 ° C), and as soon as the temperature begins to grow, the motor is degraded. The increase in revolutions occurs gradually.
Note!The motor must necessarily cool, otherwise the constant effects of high temperature can lead to thermal deformation of rubbing parts and loss of viscosity of the oil.
The easiest way to run the engine is a natural trigger of parts. It should start with speed at speeds no more than 40 km / h during the first 50 km of the road that in urban conditions it is quite difficult (traffic lights and "traffic jams" are often found on the driver), and therefore run rolling best outside the city, not more than the third gear. Overcoming the specified distance, you can increase the speed of up to 60 km / h, passing in this mode 200 km, and then raise the speed of 10 km / h after every 100 km of car run. However, you should not forget that while the car did not overcome 2000 km, the speed above 90 km / h is not advised to raise.
Despite the seeming complexity of the process, you should not have a question "What is the engine run-in and whether it is needed at all", since by performing the specified procedure, you will provide your motor long "life".
When you need to run
The engine running is carried out in two cases: after installing the new engine on the vehicle and after the overhaul of the old power unit.
On a new car
The "primary" run is performed by the specialists of the manufacturer of the car, and the thoroughness of this procedure largely depends on the further "well-being" of the machine. However, there are cases when the manufacturer declares the absence of a routing of the released vehicle.
Most likely, in this case, experts calculated that the harm from the non-optimal working mode of the new car is so insignificant that it is not necessary to report it to the buyer. Of course, you can listen to these recommendations, but will be better if you still coast your vehicle, at least at the initial stages of operation.
Note! Despite the widespread opinion, the new motor should not run through long-term work on some revolutions. This procedure will lead to a highly specialized feeding of parts, so when you begin to operate the car in normal mode, it will occur its secondary work, which is fraught with additional wear of the elements.
Performing the engine running, you should also avoid sharp accelerations and its work on maximum revolutions or the values \u200b\u200bclose to them. The permissible value of revolutions for a specific model you will find in the instructions for its operation.
After the engine overhaul
Any part of the power plant that has recently visited overhaul (no matter, the boring of cylinders, holes or grinding surfaces of the shafts), needs a certain time to host the conjugations.
Often, the primary run-in for most car friction cars is performed during the first 2-3 thousand km of mileage, which, however, is not the completion of this procedure, but only is considered the starting point of smooth load extension. Depending on the quality of the replaced parts and repair itself, the final runoff usually takes up to 10-15 thousand km of mileage. Only after this figure can be required from the motor manifestation of maximum indicators.
It should be noted that the advancement of rubbing steam is always accompanied by increased heating, which explains the need to run a new or repaired engine on reduced crankshaft revolutions (up to 60% of nominal values). It is also a prerequisite for the use of fuel and lubricants recommended by the manufacturer. Incorrectly run-in power unit often has a resource that does not exceed 30% of the calculated value laid down in its design by the manufacturer.
A frequent problem when running the engine after a major overhaul is the laying of new rings in the diverse piston grooves. If they are very broken, the likelihood of the rollers of the rings at the first start of the engine increases significantly.
Wearing grooves rate visually, just examined the old ring.If his lower part turned out to be a glossy, a little plays in the sun with waviness, and when holding a finger on it, you will feel the steps of wear, then the pistons will have to be changed necessarily. In most cases, the grooves in the pistons are swollen so that their lower surface is slightly leaked down. For this reason, the support surface of the old ring is beaten at the same angle. When installing a new ring, it will begin to twist and, most often, quickly fails.
Do you know? The shape of the piston is not such a strictly cylindrical, as it may seem at first glance. If you look at the part on the side, then notice that it has more barrel shape, and if you look at the top, then it is most likely to remind oval. In the process of operation, the piston heats up and acquires the correct form.
How to ride the motor
Motor running rules a bit. The first and most importantly of them are not to load the car. You do not need to ride in high speeds or transport an excessive amount of cargo in the vehicle (passengers), dramatically drop speed and move on low transmissions. These rules should be observed up to 1500-2000 mileage kilometers.
In the case of poor performance of the power plant, you are waiting for a lot of trouble. These include: output in the air cleaner, increased fuel fluid consumption, problems with engine start, etc. Therefore, if you recently purchased a car or made a motor overhaul, be sure to follow these rules.
