The 1.5-liter dCi turbodiesel from Renault (designation K9K) appeared in 2000 and has been produced for more than 10 years since then. Of course, during all this time the engine has been modernized several times. This power unit has survived a change in fuel systems from three manufacturers. Initially, the K9K engine was equipped with a system Common Rail from Delphi, then versions appeared with a fuel system from Siemens and in the latest generations - with injection from Continental (essentially the same Siemens, but with the logo Continental, which acquired the VDO Automotive division from Siemens).
The 1.5 dCi engine has a number of typical “sores”, but the presence of some of them depends on the manufacturer fuel system. So, until approximately September 2004, the K9K engine was equipped exclusively with a Delphi fuel system. Such motors in their designation have an index up to 728 inclusive, as well as 830 and 834, and their power does not exceed 105 hp. The Delрhi fuel system is more demanding on fuel quality, but all its components are cheaper to repair. This fuel system needs good care necessary, for its trouble-free operation you need to install only the original one fuel filter. But the most important thing is that you need to “feed” it only with high-quality diesel fuel. Due to low-quality or “dry” diesel fuel (and all rubbing components of the CommonRail are lubricated with fuel), and even more so due to the water content in the fuel or short-term airing of the fuel system, the Delphi injection pump may begin to “drive chips” due to which subsequently spreads the entire fuel system. Chips are formed in the pair “injection pump rotor - shaft rollers”. As a result, the injectors and the pump itself may fail. In addition to the formation of chips, which literally poison the entire fuel system, the performance of the fuel injection pump decreases: it stops supplying fuel at the original pressure. Also the weak point of injection from Dekphi are check valves injectors that overflow fuel into the return line. This may cause problems with starting the engine.
The advantage of the Delрhi fuel system, in addition to maintainability and relatively low repair costs, is the use of an accelerometer, thanks to which the injection adapts to the natural wear of the injectors. This feature allows you to change and install injectors without registration, grind and change valves. By the way, a new Delphi injector for the 1.5 dCi K9K engine will cost 500 rubles.
By 2005, the 1.5 dCi K9K engine was modernized. Its cylinder head, crankshaft and pistons have changed, and its power has increased - to the highest powerful version engine output reaches from 106 to 110 hp. The Siemens CommonRail system is responsible for fuel injection into the cylinders of such engines. Upgraded engines received indexes 732, 764, 780, 804, 832, 836. Powerful 1.5-liter dCi diesel engines with Siemens fuel can be identified by the presence of a 6-speed manual gearbox, while all versions of this engine with Delphi fuel were paired with a 5-speed step manual transmission. And if you look into engine compartment and consider the fuel return channels, then Delphi can be recognized by the fuel lines coming out from the top, and Siemens by those coming out from the side.
The Siemens fuel system is definitely more reliable and characteristic weak points does not have. If problems happen with it, it is only due to significant mileage. The most common problem with the Siemens fuel system is related to a malfunction of the booster pump built directly into the injection pump. Low pumping performance is caused by excessive wear. As a result, the fuel injection pump does not receive sufficient quantity fuel and operates with deviations from the norm, which immediately affects engine performance.
The Siemens (or later Continental) fuel system uses exclusively piezoelectric injectors. They are unpretentious and easily last 200,000 km and even more. However, they cannot be repaired: it only means complete replacement. You can install both new (about 400-700 rubles apiece) nozzles and “used” ones (200-400 rubles).
In rare cases, fuel system malfunctions can lead to the death of the 1.5 dCi K9K engine. The pistons can burn out due to “pouring” injectors. However, most common cause A total breakdown of the K9K engine is the rotation of the connecting rod bearings. The fact is that the connecting rod bearings themselves are short-lived and experience heavy loads. As natural wear occurs, the gap between the shaft journal and the liner increases, through which the oil, not meeting sufficient resistance, simply drains into the pan without lubricating the loaded rubbing parts. As a result, the wear of the liners accelerates, which soon leads to their rotation. An engine that rattles due to rotation of the liners is often replaced with a contract one - it’s cheaper and faster. average cost contract 1.5 dCi engine varies from 1000 to 2000 rubles.
To avoid rotation of the bearings, it is recommended to preventively replace them every 60,000 km. A engine oil For the 1.5 dCi K9K motor, only those meeting the manufacturer’s approvals should be used. It is important to know that on a car freshly imported from Europe, you need to immediately change not only all consumables, but also the connecting rod bearings. In Europe service interval This engine reaches 30,000 km, which does not benefit the liners at all. By the way, when changing the oil to this engine recommended to fill new filter fresh oil: this will prevent short-term oil starvation of the rubbing parts of the engine.
Faulty valves can also shorten the service life of the 1.5 dCi K9K engine oil filter: because of them, when the engine is not running, the oil is not retained by the rubbing parts and drains into the sump. Consequently, when starting, the engine literally runs dry for several seconds. Also, low oil pressure in this power unit may be due to a weakened spring pressure reducing valve oil pump. You can form an approximate opinion about the state of oil pressure in the 1.5 dCi K9K engine by looking at the indicator light on dashboard: If, after at least half an hour of inactivity, the light goes out instantly after starting the engine, then the oil pressure is most likely fine. However, in any case, preventive work on replacing connecting rod bearings should not be postponed.
In general, because of these same liners, the entire engine suffers. After all, friction produces chips, which the oil carries throughout the engine. So, in particular, the turbocharger of the 1.5 dCi K9K engine “dies” just because of these chips. Turbines from the KKK company, which now belongs to the even larger BorgWarner corporation, were installed on this engine. The turbines of the 1.5 dCi K9K engine have several designs, but they are all reliable and have no design flaws. However, such turbines break down. There is usually only one reason: small chips get into the oil film on the rotor bearing bushings. Here, at enormous speeds of rotation of the rotor, the metal on its surface wears out, a tiny imbalance is formed, which after some time breaks the turbine seals. Also, the turbines of the 1.5 dCi K9K engine fail due to the use of the wrong engine oil (inappropriate tolerances or viscosity) or due to extended oil change intervals.
Powerful modifications of the 1.5 dCi K9K engine are equipped with a dual-mass flywheel and particulate filter(FAP) that may require replacement - they simply cannot be repaired.
You can choose one for your car on our website.
Diesel engines have a reputation for being reliable and durable compared to gasoline engines. But it all comes down to basic rules of operation and maintenance. On the list of problem motors, diesel engine 1.5 dci, also known by its technical nickname, the K9K 1.5 dci engine can become problematic for some, but carefree for another Renault-Nissan owner.
For the first time, the Renault K9K 1.5 dci engine came off the assembly line in 2001.
The 1.5 dCi K9K has found use in most small Renault models, Dacia, as well as in several Nissan models. The most serious problem with the 1.5 dci engine is considered to be rotation of the connecting rod bearings. The problem most often occurs with a mileage of more than 150 thousand km. Repair costs may be higher than buying a used engine.
The reason for this problem occurs when there is a simple delay in changing the oil, the recommended 15 thousand on original quality oil, but no more.
Practice says that it is better to change the oil at 10 thousand and operate only with synthetics with Renault RN0700 or RN0710 approvals for K9K 1.5 dci engines. , guarantee of engine service life.
Many people are afraid of the Common Rail fuel system, but this fuel system is afraid of diesel fuel from a diesel locomotive Low quality. Yes, there are things to be afraid of, but there are ways to protect yourself from shavings in the fuel injection pump or replacing injectors after 10 thousand for $250/piece. Many people still love these engines for their torque and economical consumption 1.5 DCI engines.
Installing a STANADYNE separator with cleaning filters of 5 or 10 microns, in comparison with a conventional fuel filter, the throughput is approximately 35-40 microns.
I know those who simply threw out the original filter, put a tee on the hoses and change the separator filter every 15-20 thousand, and that’s what it turns out to be, even cheaper. Also, lastly, I can add that malfunctions may occur in the power or charging system, camshaft or crankshaft sensors.
The period of occurrence of problems with the K9K 1/5 dci engine has been since 2001.
Models in which the 1.5 dCi engine was/is installed:
Renault: Kangoo, Clio, Thalia, Scenic, Captur, Laguna, Modus, Megane, Fluence, Twingo,
Dacia: Logan, Logan MCV, Duster, Sandero, Lodgy, Dokker.
Nissan: Note, Almera, Micra III, Qashqai, Juke, NV200 / Evalia,
Mercedes: A class, B class, CLA class
A French car, which, according to its characteristics, can rightfully be classified as an SUV.
It is produced only in a few countries, such as Romania, Colombia, Brazil and, more recently, Russia.
A car was created with the VO (Logan) platform, combined with front-wheel drive. So far proposed manual transmission gears for front wheel drive(5 – 6 speed), in the future it is planned to offer for Russian market and with automatic transmission transmission
Like most real SUVs, it is equipped with a 1.5 diesel engine - liter engine, whose power is 90 Horse power. Distinctive feature The Renault Duster K9K engine's design is that, firstly, it is quieter than a gasoline engine when operating within the city, at 100 km/h, and secondly, if on a gasoline engine it is virtually impossible to start from second gear uphill without scorching the clutch, then diesel will carry you everywhere, of course, if the climb is not too steep. Yes, it accelerates a little slower than its gasoline counterpart, but here you can miss the gears and it will still pull through. Within the city limits, when fully loaded, 7.5-8 liters per 100 km is enough, and outside the city limits there is good economy - 6.5 liters per 100 km. Thirdly, the unique first gear replaces the lower gear, the car crawls along the dirt road and up the hills, there would be something to catch on to.
The diesel Duster is 58 kg heavier than the gasoline one and sways a little more on the ground, but it doesn’t matter, the shock absorbers will hold up.
Renault Duster can withstand our diesel fuel!
The design of the Renault Duster k9k engine is such that it does not allow a quick response to the gas and brake pedals. This is noticeable when high speed, but in urban conditions - no.
Engine service characteristics:
- Oil change every 10 thousand km, in accordance with technical note NT5342A K9k engine - 4.5 liters.
- To change the oil you need a gasket and an oil filter.
- The air filter should also be changed every 10 thousand km.
- It is advisable to clean the air conditioner every 2 years.
- Fuel filter – 3 options:
- Regular 8200638748,
- With hole for fuel heating 164005033R,
- For water presence sensor 8200732750.
- Periodically, every 60 thousand km, replace the belt.
- Every 90 thousand km, replace the brake fluid.
Every time you replace the drive belt, change the pulley. All this must be done, even if you do not understand engines, when contacting a technical station. service.
Engine Specifications:
- engine type – diesel, 90 horsepower.
- Transmission - 6-speed, manual.
- drive - full or front.
- load-bearing steel body.
- pendants
- front independent, McPherson type,
- rear – spring multi-link, with stabilizer,
- Acceleration to 100 km/h in 15.6 seconds.
- Maximum speed – 156 km/h.
- Device brake mechanisms front wheels - disc, ventilated,
- rear - drum.
- Wheel track – 2673 mm.
- Capacity fuel tank– 50 l.
- Trunk volume – 408 l, folded rear seats– 1570 l.
The K9K884 motor was the basis of all diesel versions Duster crossovers belonging to generation I. The Renault Russia plant produced these cars until 2015. With the transition to generation II, the volume of the “diesel” remained equal to 1461 ml, but its parameters improved - power became equal to 109 hp. versus 90 “forces” in the past. Torque has also increased. We tried to find out what the traction chart looks like after 70,000 miles. The technical characteristics of Renault Duster with a diesel engine are known to everyone. But you need to know how they will change over time.
In 2012, the power was increased to 105 horsepower using chip tuning. The video shows one example.
Technical parameters of motors from different generations
Let's consider specifications diesel engines.
Diesel 90 “horses”
Under the hood of a diesel Duster with 90 horsepower
For all diesel engines installed on first-generation crossovers, the following values were typical:
- Compression ratio – 15.7
- Power – 90 hp at 4000 rpm
- Maximum torque – 200 N*m at 1750 rpm (see photo)
- Environmental standards – Euro 4
Actually, most publications published one chart in 2011. You can see the same characteristics on it - 200 N*m and 90 horsepower (66 kW).
Torque and power, "90 hp" version
Diesel 109 horsepower
Under the hood of a diesel Duster with 109 horsepower
When restyling was carried out, almost every parameter was improved. What even applies to “ecology”:
- Compression ratio – 15.2
- Power – 109 hp at 4000 rpm
- Maximum torque – 240 N*m at 1750 rpm
- Environmental standards – Euro 5
Reducing the compression ratio means better fuel efficiency.
All technical characteristics of the Renault Duster diesel engine improved after restyling, but the working volume remained the same - 1,461 liters.
How does the torque graph change with engine wear on Renault Duster?
All Duster diesel engines are valued for the fact that maximum traction is achieved at low speeds. We are talking about numbers less than 2000 rpm, and this is the main “plus”. But over time, that is, with increasing odometer readings, the maximum point shifts to the right.
Torque and power, “90 hp” version, mileage
From the graph you can understand what will happen to the K9K engine if it “runs” about 70 thousand km.
Features that were not present with “zero” mileage:
- The greatest traction force became equal to 204 N*m. Maybe the stand is “lying” (inflating the values). We will assume that the numbers remain the same - 200 N*m.
- Rated power decreased to 88 hp. But taking into account the “overstatement” of 2%, the power should be considered equal to 86.4 hp.
What exactly will be observed as the mileage increases?
At a mileage of a third or half of its life cycle, the engine begins to “age”:
- Power decreases: “at nominal” it should be 90, but there will be 86-87 “power”;
- We can talk about the loss of “elasticity”: traction is lost “at the bottom”, but not in the area of 2000-2750 rpm;
- The maximum torque value does not depend on wear in any way.
Everything related to the “new” diesel internal combustion engines (2015 and later)
The K9K858 diesel engine, which became the basis for the restyled Dusters, should wear out in the same way as the 884 series engines. Over time, the power will drop in any case. And also, the elasticity of the engine will gradually disappear. It, as stated here, is the main advantage of all Renault diesels. Just in case, here is a list of them:
- K9K796, K9K830 – 86 hp.
- K9K884, K9K892 – 90 hp.
- K9K896 (4x2 only) – 107 hp.
- K9K856 (4x2 only) – 109 hp.
- K9K858 (for 4x4) – 109 hp.
- K9K898 (for 4x4) – 110 hp.
The Renault catalog contains many more options - for example, K9K728 or 724, but they are not related to the Duster family. All best company Renault installs it in crossovers - believe me, in reality this is so.
The main character of the last chapter is the K9K858 motor
Test drive on video: a crossover with a 109 horsepower engine
After the flagship of the line was created and launched in 1999 gasoline engines Renault-Nissan - K4M engine, the French-Japanese tandem of designers was faced with the task of updating diesel power units. As a result of this cooperation, since 2001, production of the 1.5-liter K9K series diesel engine has been launched on Renault-Nissan assembly lines. Over the past 15 years, this motor has been (and continues to be) installed on most passenger cars Renault (Duster, Fluence, Twingo, Clio, Scenic, Kangoo, Megane), Nissan (Note, Almera, Juke, Quashkai), Dacia (Logan, Sandero, Dokker), Suziki (Jimny), Mercedes (in A and B class) . The K9K engine is the most popular Renault Nissan diesel engine in the 2000s.
Structurally, the K9K engine is a four-cylinder in-line power unit equipped with a fuel injection system high pressure(Common Rail), turbocharged and common fuel rail. The creators of this engine did not use any special design “delights”, relying on a time-tested classic layout. As a result, the automaker received a certain “base” engine, easily adaptable to specific model or the layout of the car through the use of different attachments And electronic system management. There are several dozen modifications of the K9K engine for Renault, Nissan, Mercedes, Dacia and Suzuki cars. You can determine for which particular machine a particular power unit was created, what its power characteristics are and the features of the attachments used, by the three numbers following the engine marking. For example, in our online store you can buy a Renault K9KJ836 engine. This powertrain has been removed from the vehicle. Renault Megane 3 with a 6-speed manual and has a power of 110 hp. Other Renault engines are identified in a similar way.
Main malfunctions and service life of the K9K 1.5 DCi engine
The accumulated 15 years of experience in operating K9K engines allows us to quite accurately determine the service life and safety margin of this power unit. Subject to compliance with the regulations Maintenance(from the factory) these motors operate without overhaul about 300 thousand kilometers, and the first 150 thousand do not cause serious trouble to their owners at all. But in practice, this figure can vary greatly, both up and down. The fact is that K9K engines are very sensitive to the quality of the oil used. Therefore, if you use oil that differs in its characteristics from the factory recommendations, or change it less often than once per 10,000 km (according to the factory recommendations, 15 and even 20 thousand km), then you are reducing the lifespan of your engine. Problems with the lubrication system usually lead to cranking of the connecting rod bearings on K9K engines, which means a guaranteed overhaul.
Another one a big problem The problem that owners of cars equipped with K9K engines face is the lack of experienced specialists in the Common Rail fuel system. That is, there are such specialists, but only in large cities and, as a rule, they work by appointment. In other words, if you start having problems with the fuel system (and given the quality Russian fuel, such problems can arise at any time), then you will have to either wait your turn for repairs, or contact the service without a guarantee for the quality of the work performed. The design features of the fuel system of the K9K engine are such that the breakdown or incorrect operation of one of the system elements, in most cases, leads to the failure of other elements vital for the operation of the engine. For example, incorrectly working K9K engine injectors can even cause your engine to burn out the pistons. Thus, if you have messages about engine problems on your dashboard, then you should not just regularly erase the error from the computer’s memory; it is much wiser to immediately contact qualified service for detailed diagnostics and troubleshooting.
And of course, it is very important to monitor the condition of the turbine of the K9K Renault engine. If handled incorrectly, the turbine may require attention after 60,000 km. And the cost of this part is very high and averages 20-25 thousand rubles for a used part and 45-70 thousand rubles for a new original. By the way, the cost of all components of the K9K engine fuel system is quite high. So, used injectors in our online store cost 10 thousand rubles apiece, K9K injection pump - 16 thousand rubles, USR valve - 6 thousand rubles, and so on. Cost of new original parts, naturally, many times higher.
Owners of a car equipped with this power unit can recommend the following:
- carefully select and change the engine oil in a timely manner (preferably at least once per 10 thousand kilometers);
- just refuel quality fuel, under no circumstances fill the tank with “left” diesel fuel, or fuel at gas stations of dubious brands;
- change the fuel filter regularly (preferably with every oil change) - this is the best thing for you important element savings on future repairs. Some car owners even replace the standard fuel filter with a filter with a better fine cleaning;
- change air filter every 30,000 mileage;
- If messages about engine problems appear on the dashboard, contact diagnostics immediately.
- Don’t skimp or delay repairs. The turbine is not working correctly, but you are in no hurry to replace it? - then expect high costs also for injectors and fuel injection pumps.
Despite the apparent abundance serious problems Renault K9K engine, it should be noted that the vast majority typical breakdowns This is primarily due to improper operation of this power unit. The motor itself has a sufficient margin of safety, but is designed for regular and careful maintenance, visits qualified specialist and accurate diagnosis.