Breaking in a new car: how many kilometers and how to properly break in a new car. Running in a new car: how many kilometers and how to properly run in a new car Engine braking on a Nissan Qashqai during break-in

12.03.2021

The Nissan Qashqai crossover has been sold in Russia since 2007. During this time Japanese company Nissan managed to sell over 3.3 million cars worldwide. Concerning domestic market, then here in ten years the Japanese have also achieved good achievements - over 250 copies of the model were sold. Not the brightest and most eye-catching exterior, average configurations and low-volume power plants. What is the success of the model and why is she so loved in Russia? Nissan Qashqai became the first crossover of a Japanese company assembled in Europe.

The car received its name in honor of the Qashqai tribe who lived in the Iranian province of Fars. Today, the car is sold in most European countries, Japan and Australia. True, the name of the car is different everywhere. For example, in the Japanese and Australian markets, Qashqai is produced under the guise of Dualis. However, changing the label on the door luggage compartment the car has no effect on specifications. The model quickly gained popularity due to its reliability and unpretentiousness. Part of the popularity of the Koshak is due to reliable Japanese power plants. Next, we will tell you what the service life of the Nissan Qashqai engine is, and what problems the driver may encounter during operation of the crossover.

Line of power units

The first generation of the model was so popular with domestic drivers that Japanese engineers spent seven years developing the second generation. Only in 2014 was the start of production of the Nissan Qashqai 2 announced. At the same time, the crossover was put into mass production at automobile plant in St. Petersburg. The Koshak was officially supplied to Russia with 1.2, 1.6 and 2.0-liter power plants. The most common is the 1.6-liter gasoline engine, characterized by its resourcefulness and relatively high resistance to adverse conditions.

However, a considerable part of the model’s sales came from modifications with a small-displacement 1.2 engine with 115 “horses”; there were also buyers for a 130-horsepower 2-liter engine. In 2017 year Nissan Qashqai 2 has undergone some changes, affecting mainly the exterior of the model. Diversity power plants remained the same. The engines are aggregated with a variator and manual transmission transmission The maximum speed of the version of the car with a 1.2-liter engine is 160 km, and acceleration to 100 km/h takes as much as 13 seconds. Of course, such indicators of dynamism may seem too weak to many. But already the 2.0-liter version of the car accelerates to “hundreds” in 10 seconds, and maximum speed– 180 km/h. True, the difference between these two modifications in cost is about 200 thousand rubles.

Engine life 1.2

The joint development of Nissan and Renault has found its application on many French and Japanese relatively small cars. The 1.2-liter engine was designated DIG/TCE by Nissan and Renault, respectively, and by its internal index the engine can be identified as H5FT. It debuted for the first time in 2011 and immediately received many praises from independent automotive experts. Its main advantage is smooth operation and low level emitted mechanical noise. The Nissan Qashqai 1.2 really works quietly, and virtually no extraneous mechanical noise from the operation of the engine and transmission penetrates into the cabin.

Specifications 1.2 DIG:

number of cylinders – 4;
engine type – in-line;
valves per cylinder – 4;
power supply system – direct injection;
boost level – 115-130 forces.

Initially, the 1.2-liter engine was produced in only one boost level with 115 horsepower, but a few years later other variations with 120 and 130 horsepower appeared. The DIG/TCE engine is a four-cylinder with four valves per cylinder. The entire aluminum block is equipped direct injection fuel and turbine. A reliable chain serves as a timing drive, and one phase regulator is installed on both shafts. A technological innovation of the engine is considered to be the use by the manufacturer of antifriction materials during the development of the engine, which, in theory, should help increase the service life of the engine.

But in the course Nissan operation Qashqai 1.2 eventually encounter some problems and “chronic” engine diseases:

Increased oil consumption. Flow rate lubricant in some cases it increases after crossing the 200 thousand kilometers mark and amounts to 0.5 liters of oil per 1000 km.
The revolutions are floating. Another typical “sore” of DIG/TCE, which can be successfully eliminated by flashing the control unit.
Oil leaks. Often, owners of Nissan Qashqai 1.2 note various leaks of lubricant through various oil seals - the reason is completely unknown.

The manufacturer does not provide any information regarding the rated life of the motor. Guarantee period DIG/TCE services – 150 thousand km. The owners, in turn, note that the service life of the Nissan Qashqai 1.2 engine is 300 thousand kilometers.

Engine life 1.6

In the first generation of the crossover, the 1.6-liter engine is represented by the HR16 naturally-aspirated power unit, which is well known to car enthusiasts. With the release of Nissan Qashqai 2, new unit in the model’s line of engines, the range was supplemented by a 1.6-liter R9M diesel engine with a rated power of 130 to 160 “horses” and a torque of 380 Nm. The atmospheric HR16 is time-tested and well studied by specialists. Its aluminum cylinder block is made using “wet liner” insertion technology. The block head does not have hydraulic compensators; the thermal clearances are adjusted by selecting pushers.

Technical characteristics of 1.6 HR16:

number of cylinders – 4;
number of valves – 16;
engine type – in-line;
drive type - timing chain.

The 1.6-liter diesel engine is represented by the R9M engine, known for being installed on many French cars. It also uses a timing chain as a timing drive. It is designed for the entire service life of the motor, but, as a rule, it fails ahead of time. The chain tends to stretch due to difficult operating conditions, as well as constant excessive load of the installation. Its first symptoms of malfunction are a clearly audible metallic ringing. At the first manifestations of the disease, it is important to replace the timing drive with the pump in time to avoid accidental slipping of the stretched chain by one tooth. Of course, fans of crossovers and Japanese cars In general, the question is: how long does a 1.6-liter engine last? The resource of the gasoline HR16 is designed for 350-380 thousand km, but the diesel analogue “runs” at least 300 thousand km.

Engine life 2.0

The two-liter naturally aspirated power unit is represented by the MR20DE unit. This is a Japanese engine, which has been produced since 2005 by engineers at the company's automobile manufacturing plant in Yokohama. In Russia, they have known about this engine for a long time, and not only because of its installation on the Nissan Qashqai. Many fans of Japanese SUVs became acquainted with the engine thanks to. In fact, the MR20DE is an example of the old Japanese school of engine building. Aluminum 16-valve head with a durable and heat-resistant cylinder block, timing chain drive, phase regulator installed on the intake shaft, throttle control and the absence of hydraulic compensators. It was these properties that made the most reliable Japanese power plants famous in their time.

MR20DE Specifications:

number of cylinders – 4;
number of valves – 16;
power supply system – injector;
engine type – in-line;
drive type - timing chain.

The brand of the second two-liter engine that the Japanese introduced with the release of the new generation Nissan Qashqai is R9M. This is a diesel analogue of the new generation MR20DE, characterized by the presence of modern Start-Stop systems. Thanks to Star-Stop, fuel consumption is reduced, the most efficient engine operating mode is selected, which has a positive effect on the engine's service life. However, the R9M cylinder block, unlike the MR20DE, is made of cast iron. The motor is equipped with a chain drive designed for the entire declared service life. The service life of the MR20DE engine is 350 thousand kilometers with normal maintenance, but the more modern and technologically advanced R9M is capable of covering 400 thousand kilometers of road.

Reviews from Nissan Qashqai owners

Development power units For the first and second generation Nissan Qashqai, the Japanese worked together with French engineers. The motors turned out to be of high quality and resource-intensive. But they are not without some drawbacks, such as oil leakage or leaking seals. Another weakness is that the installations are practically not amenable to major repairs. Of course, there are craftsmen who work on completely Japanese engines, but in the case of Nissan Qashqai engines the situation is somewhat different.

Acquisition original parts and components for a specific engine will cost many times more than buying the same engine for secondary market. Plus, you also need to pay a hefty sum for all the major repair work. Therefore, most often car owners Japanese crossovers and SUVs resort to searching for a used engine with low mileage in good condition. Reviews from car owners will tell you in detail about the actual service life of the Nissan Qashqai engine.

Motor 1.2

Stas, Moscow. For a long time I drove it, but in 2014 I decided to buy an updated “cat” as soon as it got to Russia. I purchased a modification with a 1.2 liter turbo engine. Many owners complain that they do not have enough power from the car. Personally, I did not feel the lack of agility of the car. It is comfortable to drive a Nissan Qashqai on the roads of Moscow, maneuverability is the highest level, “eats” very little fuel. The dynamics within the city are enough, yes, on the highway there may be a lack, but I use the car 90% within the city. Now the mileage is 80 thousand kilometers. There were no problems with the car. I have not changed the chain, there is no knocking or ringing. Many people say that this engine tends to “eat” oil, but I have never encountered this problem. I think that 300,000 km is a very realistic engine life.
Yuri, Chita. I will express my opinion regarding the new 1.2-liter turbo engine. This engine is not designed to major renovation, the cylinder block is not cheap to replace, so if it fails, you need to look for a new unit. The experts say 300 thousand for 1.2 DIG/TCE is the ceiling. I completely agree with this statement. I drove 50 thousand kilometers on the 2016 crossover, to be honest, I wasn’t very impressed, I expected more. I am glad that there were no problems with the engine. The timing chain lasts 150,000 km.
Maxim, Tula. The motor is relatively new, so nothing is known in detail about its actual service life. One can only make guesses and assumptions. There are specimens that have already successfully traveled more than 100 thousand kilometers, and on their original timing chain. The service life of a 1.2 turbo engine is on average 300,000 km, it can vary up or down depending on the quality of maintenance.

The resource of the 1.2-liter engine with a turbine, according to reviews from car owners, is 300,000 kilometers. In order to achieve the full service life set by the manufacturer, it is necessary to strictly follow the regulated maintenance and recommendations of the engine manufacturer. An ideal option for daily city use of the cat - acceptable dynamics, low fuel consumption. But on long trips, of course, there will be a lack of power in the car.

Motor 1.6

The HR16 engine is time-tested and proven ten years ago. The diesel R9M is not so common, due to its high requirements for the quality of diesel fuel, but in general it has a good declared resource, which is at least 300,000 kilometers. The atmospheric analog wins in terms of resource - at least 380 thousand resources.

Motor 2.0

Grigory, Moscow. I've been driving a cat since 2012. Traveled a total of 140 thousand km. The chain is original, I haven’t changed it yet, although it’s been a while. During this period, I did not encounter any serious shortcomings or malfunctions of the engine. Fuel consumption as well as motor oil, always normal. I recently went for diagnostics and had the suspension checked. I had to replace the front struts, support bearing, rear caliper and brake discs. In general, little things, but it all adds up to a substantial amount. But the engine pleases, it is quiet, powerful and at the same time reliable. I recommend everyone to pay attention to the version of the car with the two-liter MR20DE.
Andrey, Voronezh. I have Nissan crossover Qashqai first generation J10 with a real one installed under the hood Japanese heart– MR20DE. I change the oil every 8-10 thousand km, fill it with the recommended one from Nissan. I've already wound 160k, it doesn't eat oil, and there's no excessive fuel consumption either. Those who complain about “oil guzzling” need to reconsider their driving style. Of course, I do not rule out that there may be a breakdown. But I myself have noticed more than once how lubricant consumption increases at speeds of 140-160 km/h. The optimal speed is 120 km/h. The oil does not leak, consumption is normal, so I recommend sticking to this speed range. The resource of this engine is colossal - 400 thousand kilometers. Auto mechanics unanimously say that this is one of the best Nissan engines.
Yaroslav, Sochi. The 2010 crossover is a restyled version with a 2.0 MR20DE engine. I am completely satisfied with my purchase. The best option, if you operate the car in city/highway mode in percentage 50 to 50. The odometer shows 180 thousand kilometers, I only replaced the timing chain once, it stretched and began to ring. If you do not replace it in time, the teeth will slip and repair the motor will be difficult, so keep an eye on the condition of the drive. The actual lifespan of the MR20DE is unknown in detail, but experts claim that 380-400 thousand installation is easy. But here it is important to take into account two nuances: quality of service and driving style. You can buy even the most reliable engine for 100k. But I haven't encountered serious problems engine for the first 180,000 km, so there is every reason to believe that 400,000 is the real figure.

The two-liter MR20DE is a reliable, powerful and unpretentious engine. It is easy to maintain and repair. During operation of the Nissan Qashqai 2.0, it is important to monitor technical condition crossover. Carry out regulated engine oil changes and use only original repair kits. Then the motor will be able to fully develop all the potential built into it by the manufacturer.

The opportunity to feel ashamed and stand in a corner on the peas appeared only six months later, when the Skoda people finally found out that nothing had been done to the engine, and how much power they put into it from the factory was there.

That's all I mean. Getting into the new Qashqai, which also has a 1.2, also a turbo, and even 10 more horsepower than that peppy Yeti, I expected something comparable - if not sport and an ineradicable desire to drive everywhere, then certainly confident and dignified behavior . According to the passport, the advantage is generally on his side: 10.9 seconds to a hundred versus the Czech 11.8. But what's the use of numbers if the sensations are exactly the opposite? Where the “Yeti” is responsive and cheerful, the “Qashqai” crawls out of the turbo lag with the agility of a morning panda, hangs on for a while, and then goes back to sleep.

I have already driven such a car in the premiere test - but just a little, on country roads and in a relatively serene mode. Then the 1.2-liter version seemed quite tolerable, but now the bustle of the city has made adjustments, and considerable ones. The engine constantly has to be kept in good shape by actively operating the six-speed transmission lever and simultaneously reading some highly effective calming mantra in a circle. There is no other way!

Moreover, the transmission itself also works through a stump. The first two gears can easily stop engaging at some point: the lever doesn’t move and that’s it, even if you crack! If this misfortune happened somewhere in an empty yard, it’s not so bad. But it’s shameful to be stuck in the middle of the third vehicle, turn on the emergency lights and try to stick at least something for an endless minute, feeling the heavy gaze of a gloomy guy on a Kamaz on your back... A very peculiar sensation, I’ll tell you. Yes, perhaps this is a problem with a specific test sample, which was thoroughly mangled by its colleagues over 7,000 kilometers. This can really happen, especially since the rest of the time the selectivity of the box is adequate. But questions still remain.

For example, about why “Qashqai” has six gears. The gear ratio of the fifth and sixth stages differs minimally: 0.763 and 0.638, respectively. For comparison, for the two-liter version these parameters are 0.914 for the fifth and 0.767 for the sixth. In practice, these boring and incomprehensible numbers mean this: having traveled to St. Petersburg and back for the weekend, I managed to drill into my subconscious the “3-4-6” shift pattern, because fifth gear is absolutely of no use. Naturally, upon returning, my personal car with a five-speed gearbox, which I switched to immediately from the Qashqai, almost spat out the transmission, quite surprised at my attempt to engage the rear at a speed of 100 km/h.

In general, if you are determined to buy a Qashqai and are not a world champion in stinginess, do not regret a little over a hundred thousand and take the version with a two-liter naturally aspirated engine. The dynamics there are also, to put it mildly, not racing, but you will definitely feel more confident.

However, the most important thing in this whole story with a small turbo engine is not even the dynamics, but the psychology of the buyer. Previously, the basic Qashqai was equipped with the ancient aspirated 1.6, with which everything was very clear - a vegetable, but reliable and simple as a shovel handle. Everyone was fine, everyone was happy with everything. An incomprehensible and new tiny contraption with a turbine is a completely different matter. The devil knows whether it will come true or not, and if it does, then how many weeks a year the car will not drive, but will grow moldy in the service. That’s why citizens are afraid, and that’s why they don’t take it. And a two-liter Qashqai, even in the “base”, costs close to a million, and this is the territory of larger and more respected guys like Tiguan, CX-5, ix35 and others. In order to compete with them, a pretty appearance, a pleasant interior and a heap of fashionable gadgets are no longer enough: in Russia, size still matters.

The statistics are inexorable. At first, the magic of the name did its job, and Qashqai started even better than planned. But then something went wrong: if back in May the crossover was at the bottom of the top ten most popular cars in Russia, and in June it even made it into the top 8, but then it went downhill, even falling out of the top 25 by the end of October and losing almost 50 percent in sales. Does this make Qashqai bad? No, he's normal. But with forecasts about the continuation of the story of amazing market success, when I finished writing the last test drive five months ago, I perhaps got carried away.

Does a new car need a break-in or not? Both drivers and representatives of engineering companies have been arguing on this topic for many years. Some say that the tests that a car goes through at the factory are more than enough. Others argue that the machine consists of hundreds of different components, and in order for this entire system to work like a clock, it needs to be run in.

In fact, most car parts do not need to be broken in. Modern technologies make it possible to achieve extremely precise interaction of all spare parts. The only exception is the engine. This is the most important part of the car, and it is the one that most needs additional influence.

Every attentive car enthusiast will have a question: what are company representatives arguing about among themselves? In reality, there are two camps in any automotive plant. The first includes technical specialists. Their task is extremely simple. The car should last as long as possible without any breakdowns.

Managers are another matter. Their task is to sell the car, but what happens to it is not their problem. No, don’t think about it, 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 of cases, the car covers the stated distance. But what happens next? Running in helps to significantly extend the life of the car. The main thing is to do everything according to the instructions, and vehicle will serve you for a long time.

Physics of the process

To understand why running in is needed, let’s look at the process from the inside. During operation, the parts rub against each other. This is necessary primarily so that the bearings begin to work as efficiently as possible. The same applies to cylinders and pistons.

Many experts will argue that there is an oil film, and it will definitely protect all car parts from damage. Undoubtedly, they will be right, but not completely. The fact is that the oil coating has extremely low reliability and “breaks” under high loads. As a result, parts are damaged and wear out faster.

To prevent premature wear, a car needs to be broken in. During the driving process, according to a clearly defined algorithm, all components and spare parts of the car are polished to a mirror shine.

Car manufacturers are aware of this effect. Therefore, cold running is done at the factory. Servo drives can significantly increase the mating of parts. That's just the most modern equipment does not give the same effect as running in.

Running in a car

Instructions

To break in a car you need to drive at least 500 kilometers. Some automotive experts they say that 300 is enough, but it’s better not to risk it. In order to maximize the pairing of parts, you need to follow the following instructions:

Of course, there are many recommendations for breaking in a car, and all of them must be followed if you want the car to serve faithfully for many years. However, remember one paradigm. The main thing in running-in is smoothness; avoid any sharp turns, rapid acceleration and sharp braking.

Running in the transmission

Running in a car's transmission is also very important. The fact is that this device directly interacts with the engine, and in order for the systems to work in unison, it is necessary to adhere to several simple rules:

Avoid off-roading.
For the first five hundred kilometers, forget about the front axle.
Until the car travels 800 km, do not use a trailer.
Sharp braking is strictly prohibited.

Just four rules in the first eight hundred kilometers will allow you to achieve perfect synergy between engine and transmission.

We extend the life of the car

To extend the life of your car, in addition to running it in, you need to take care of high-quality fuel and lubricants. Refuel only at trusted stations. Give preference to gas stations of the same network. Use good oil.

If you do not have the opportunity to use high-quality fuels and lubricants. Let's say you often travel around Russia and refuel far from the city - think about additives.

Important! Visit regularly service centers. This procedure becomes especially relevant after the warranty expires.

What if you don’t break it in?

Every driver should know the consequences of not running his car. Unfortunately, the whole point is that it is extremely difficult to “calculate” the benefits of this operation. The answer is official dealers, and not technical specialists, comes down to the fact that you can immediately operate the car at maximum speed.

Unfortunately, after 2-3 years it is extremely difficult to determine why the engine failed. After all, during operation it is influenced by many factors, and it is difficult to find out which one led to the breakdown.

Important! During the first thousand kilometers, manufacturers recommend refraining from high loads, as this can lead to engine overheating.

However, even if you completely ignore running in the car and immediately start driving at top speeds, nothing will happen. All that threatens you at first is increased consumption oils But in the future, lack of running-in can lead to premature wear of parts.

Advice! If you buy a car for 2-3 years, you definitely don’t need a break-in, but if you want to use it for at least 5-7 years, it’s better to show restraint in driving for at least the first thousand kilometers.

If running-in is really effective, why haven’t engineering brands come up with special mode

Modern cars are simply crammed with a variety of electronics. It’s not surprising that drivers are wondering why engineering companies haven’t come up with a special operating mode that could limit engine activity in the first thousand?

The answer to this question is best divided into two parts. In the first, you need to tell us that there is still a certain restrictive regime in modern cars, however, this is not a run-in, but a so-called transport program.

When the car is transported from the factory to the dealership, a saving mode is activated to preserve battery charge. It can only be turned off at a dealership using special equipment.

On the other hand, the program that controls the running-in is quite complex. 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 do the break-in yourself.

Attention! There is also a third aspect to this issue. But it’s not customary to talk about him. Car companies are interested in people buying new models from them, and for this to happen, the old ones must fail.

Results

Of course, it is difficult to prove the effectiveness of break-in. Since no company is interested in conducting expensive studies to document the effectiveness of this procedure. But drivers who want their car to last a long time should be careful during the first thousand kilometers.

Nissan Qashqai, Qashqai+2. The engine revs up slowly (causes and solutions)

When operating a gasoline or diesel engine, the driver may encounter the fact that when pressing the gas, the engine does not gain speed. Note that after installing LPG on a car, a problem often arises when the engine does not pick up speed on gas, although the car drives normally on gasoline. Malfunctions of various kinds can be hidden in both quite simple things, and indicate the need for serious engine repair. Next we will look at why it is not gaining momentum diesel engine or the gasoline engine refuses to spin up.

If the engine has stopped gaining momentum, then the first thing you need to do is analyze when and how this manifested itself. In other words, the unit stopped spinning unexpectedly, or the problem with gaining speed gradually progressed. You should also pay attention to the presence or absence of other symptoms.

The fact is that the failure of a previously serviceable engine to gain speed after any repairs or other manipulations may simply be the result of assembly errors, a not connected sensor, etc. In such cases, the malfunction can be quickly and accurately determined after an independent inspection or immediate return of the vehicle to the service center where the car was previously repaired.

If you are faced with the fact that the engine stalls for no apparent reason, does not pick up speed, the car periodically stalls, etc., then in this case the engine needs in-depth diagnostics. The causes of such a breakdown can be divided into simple and complex, arising immediately or having received prerequisites.
Why the engine does not gain momentum: from simple to complex

At the very beginning, let's look at simpler and more obvious faults. The set of revolutions while driving is greatly influenced by the efficiency of delivery, the timing of ignition and the completeness of combustion, as well as the composition of the fuel-air mixture.

A common reason why an engine does not pick up speed (injector, carburetor, diesel, gas car) is problems in the ignition system, as well as in the air and fuel supply systems. Experts highlight the following:

Severe contamination of the air filter reduces the ability of air to penetrate through the filter element, as a result of which the engine becomes uneven, the unit loses power and does not gain speed. Also common cause Problems with the air supply may be that a foreign object (rag, plastic bag, etc.) may accidentally end up in the air filter housing.
You should also pay attention to the leakage of excess air at the intake as a result of various defects. intake system. The problem can appear unexpectedly or gradually progress. Note that the engine usually does not gain speed in case of strong air leaks. The fact is that in the composition of the fuel-air mixture, the normal ratio of air and fuel in such a situation noticeably deviates from the norm. The mixture turns out to be very “lean” (lots of air and minimal fuel). With such a charge, the engine starts, but does not gain speed while driving, and also runs intermittently.
A similar picture can be observed when there is no supply to the unit. required quantity fuel. The culprit may be fuel filter, which is also capable of getting very clogged. Note that there may be no problems with starting the engine, since there is enough fuel for the XX mode. At the same time, while driving, the car may twitch, react to pressing the gas pedal with a long delay, dips may occur when the speed increases, or the unit may not spin above a certain mark on the tachometer.
A dirty fuel pump mesh filter can also lead to similar symptoms. Over time, deposits from the specified filter tend to accumulate from fuel tank. As a result, the fuel pressure in the system becomes insufficient, the pump performance drops, and the engine itself is not able to operate normally in different modes. It often happens when the engine picks up speed and stalls precisely because the grid is clogged.
Replacing the fuel pump mesh. We also recommend reading the article on how to clean or replace the fuel pump mesh yourself. From this article you will learn about the installation location of this mesh. fuel pump, as well as available ways to clean it yourself.
If the spark plugs or high voltage wires do not work properly, then the mixture may not ignite properly. As a result, ignition of the fuel charge in the cylinder may occur untimely, engine power drops, and speed does not increase. Such consequences are caused by oiling or contamination of spark plugs (especially on internal combustion engines with a significant mileage), damage to the spark plug body, and incorrectly set gaps on the electrodes.
Also, the appearance of a spark and its quality can be directly affected by the breakdown of high-voltage spark plug wires, as well as their breaks. In such cases, the engine begins to stall, misfires and misfires are observed, and the speed gain deteriorates.
The driver can identify most of the above reasons and fix them relatively cheaply on his own. It is necessary to check the spark plugs and wires of the ignition system for a spark, measure the pressure in the fuel rail at injection internal combustion engines, inspect air filter for contamination, replace the fuel filter, clean the fuel pump screen, etc.
Now let's talk about problems that may require certain knowledge, skills and equipment for diagnosis, and also be a reason for a visit to a car service center. Let's start with the fact that in this list Malfunctions are usually found when the engine does not pick up speed due to the failure of any element of the ECM, ignition system, power supply, etc. In other words, we are no longer talking about “consumables” (spark plugs, wires, filters, pipes), but about details. In parallel with this, one should also take into account whether the breakdown occurred unexpectedly or whether the fault progressed gradually.

One of the reasons may be misaligned timing. Violations of the synchronous operation of the gas distribution mechanism regarding the intake and exhaust strokes lead to the fact that the intake and exhaust valves open untimely. The malfunction occurs as a result of errors during timing belt replacement if said timing belt has jumped one tooth or more teeth. Also, the cause may be incorrectly adjusted valves (the problem does not manifest itself sharply), various problems in variable valve timing systems, breakdown of the timing chain drive, etc.
Unexpected breakdowns include failure ignition module, as well as malfunctions of the ignition coils. In this case, the cylinders begin to misfire, the engine stalls and loses the ability to gain speed normally.
In situations with engine speed, the power supply to the injection nozzles should be checked. If problems arise with the wiring, then the control signal is not supplied to the injector or is received intermittently. As a result, the injector does not open in a timely manner, misfires occur in one or more cylinders, the engine does not reach the required speed and loses power.
The fuel pump or fuel injection pump on diesel engines may fail. This problem usually does not occur immediately (except in cases where the electrical wiring to the pump is damaged). Much more often, the decrease in pump performance occurs gradually. Sooner or later, the pump will begin to pump fuel very weakly; the pressure will only be enough to operate in idle mode. An increase in load and speed will lead to the engine stalling under load, not spinning up, etc.
In some cases, severe contamination of the injector itself leads to similar results. Driving on low-quality fuel, as well as ignoring the necessary procedure for cleaning injectors every 30-40 thousand kilometers driven, can mean that the performance of one or more fuel injectors has dropped significantly.
Engine speed can also be affected by the condition EGR systems, catalyst throughput or particulate filter. As for the second case, due to a clogged catalyst, exhaust gas removal deteriorates, the engine literally “suffocates” and is not able to gain normal speed.
In parallel, it is necessary to check various sensors electronic system engine control. Their incorrect operation can affect the composition of the mixture, that is, the amount of fuel and air supplied to the internal combustion engine. Such sensors include TPS, DMRV and a number of others.

Eventually
Considering that there are many reasons for problems with revving on a modern car, it is optimal to immediately connect the car to diagnostic equipment(scanner) to search for possible errors. This is especially necessary to do in the case when the engine does not pick up speed and the check light on the dashboard lights up.

Note that a fairly rare, but also possible, case is the failure of the ECU. This often happens after washing the engine, as well as as a result of unprofessional interventions in the factory firmware of the controller. Sign of problems with electronic unit is that the engine picks up but slows down.
Such failures are associated with a software malfunction in the operation of the electronic device. The ECU receives the wrong message low revs(for example, 2-3 thousand rpm) for the so-called “cut-off” speed and stops the fuel supply. In other words, the conditional protection against exceeding the permissible maximum engine speed is triggered prematurely.

Finally, I would like to add that timely cleaning of the injector, replacement of spark plugs and ignition wires, filters and filter elements of the fuel pump, cleaning throttle valve, correct adjustment throttle and a number of other service procedures will allow you to get maximum power from your internal combustion engine. As for cars with gas equipment, not only the engine power and its speed on gas, but also the overall service life of the power unit will depend on the correct installation and configuration, as well as on the timely replacement of filters and maintenance of other elements of gas equipment.

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