Renault K4M engine - service features and typical faults. K4M (Engine): reviews, features, working temperature, tuning engine K4M 1.6 Reviews

25.04.2018

It would seem: what is interesting can be in the engines of modern cars of the budget class? There is a volume of 1.6 instead of the engine, and nothing else? And each such motor has its own interesting nuances, at least in terms of regulatory service.

Characteristics: volume 1.6, 16 valves (DOHC), 100-110 hp (depending on execution), in a number of executions on inlet camshaft A phase management is installed (the correct name is below in the text), the timing of the timing belt, the cast iron cylinder block, injection intake manifold, distributed, electronic. This motor is installed on the most common Renault models - Logan, Sandero, Duster, Megane, Fluence, Scenic. As well as on Lada Largus., Lada Vesta.

Replacing motor oil

When replacing the oil, the most dies (as in most modern budget renault motors) Access to the oil filter. More precisely, its almost complete absence. So immediately it is not visible.

In many versions, it is closed from a massive gland covering the fuel ramp:

Ramp protection. It is unknown to reliably, it is unknown, however, according to the catalog, this name is that: "Protection of the fuel ramp." Yes, and visually unlikely that it can carry some other function.

What is hidden under the protection of the ramp.

After the removal, we see that indeed, the ramp stands somehow a bit clumsily - it is possible, in the case of an accident, it was damaged and the gasoline began to flow, and the protection was delivered to eliminate this danger.

But we are now about the replacement of oil. Oil filter is visible in the left side. It can be noted that the chain puller get to it is difficult, it is better to have a "cup" or "spider" puller. But this is a trifle, there is less obvious circumstance: if the starter is located as well as here, it is highly recommended before removing the filter to remove the terminal from the battery, since the power terminal at the starter is not closed, and it's easier to hurt her gate, trying to bring it to filter.

Spark plug

But in terms of access to Ignition Candles, the designers operated. Although the intake manifold is located right above the engine, there is just a place for access to candles.

That's just the ignition coils sit in the wells through seals and accumulate a little - pull them out problematic. The Captain Council is obvious - you should not try to drag them, climbing the connector, it is laid out.

On VAG groups, it would be necessary to approximately such devices:

But we have Renault, here such tools will not help. It can be seen that it literally has nowhere to slip them:

It will help here ordinary lengths:

And a small advice for those who will pull out the coils for the first time: at first do not "rotate" the coil up, first move, feel "goes - not going", that is, "rally" in the nest itself, and then gently start pulling out with simultaneous Light scrolling along the horizontal axis.

Another characteristic sore of this engine associated with the layout - on many models Renault. (In particular, on DUSTER), from somewhere from the area of \u200b\u200bthe washer injector, water strives to check in the candle well of the second cylinder.

Footprints of water in this case are clearly visible both on the coil and on the candle:

Explanation just in case: in Renault cars, the numbering of cylinders starts from the gearbox, and not from the drive of the timing, so that all the photos are given correctly.

For a more in-depth study of the issue, it can be advised to read on the Internet-portal of the Legion-Avtodat company in the Article section, where the auto vesselists are talking about the many nuances with which you can meet when servicing the ignition systems in general - it is useful when comparing the analogies. For example:
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,
,

etc.

Starter.

On some machines such as Megane 3, the starter is extremely unsuccessful on this motor - behind the engine. Right over it passes the exhaust manifold, and right below it is the right drive shaft. As a result, he is not covered with road dirt, but from dismantling it is protected reliably - to get to him after the army of the right front wheel, on the elongated hands. The combination of these factors leads to the fact that the terminals on the starter tormented to oxidize (and he himself does not very hardly live in such conditions), and no one does regular cleaning and lubrication procedure (well, who really will come to mind? ).

With all this, for example, on Renault Scenic And for some reason, Duster decided not to mock the user, and the starter was located on the other side of the motor - and now it is very easily accessible right under the hood (see photos in the section on the replacement of oil). True, the ease of access is no longer needed - it is reliably protected from dirt from the road.

And more advanced specialists may ask, with which the state can be diagnosed rechargeable battery, generator and starter by car:

This was described in detail on

Timing belt

Noteworthy motors and in the sense of timing belt. The belt resource is 60 thousand kilometers or four years. And the replacement has all the modern jokes. On a number of execution of this engine on crankshaft Vale No key, gear and pulley are fixed by a bolt. That is, it is necessary to delay strictly according to the manual, the option "Tighten the pneuma to Duri" does not work. And where the key is (for example, on DUSTER), it still does not become easier, because there are no labels, and it is necessary to put the necessary values \u200b\u200bof the shafts using clamps:
- screw the crankshaft lock in the cylinder block
- scroll until it stops in the retainer
- fix the camshafts of the plate inserted into cuts from the ends of the camshafts.

These ends of the shafts are located on the opposite side of the engine:

In the photo, the fixture of distribution shafts.

Fords, for example, the principle of the same. The difference is that on K4M these ends of the shafts are covered with plugs. These plugs, if you look at the service manual, disposable - they must be pushing a screwdriver to dismantle. Someone will master away the old, without damaging, but in general, when replacing the timing belt, you need to immediately order new plugs. Who thinks about it? Standard as - "... yeah ..., I change the timing. So, the belt ordered, tensioner, pump ... which plugs?".

Gear on the crankshaft Renault Duster.. It can be seen that the key is there, but there are no labels.

By the way about the timing belts: when purchasing a new one, it is very desirable to pay attention to the year of release:

1 - Factory notation
2 - year of release (written last digit of the year, in this case "2007")
3 - Week of Release

VCP system

(Variable Cam Phases or "System Change System of Thame distribution")
Spoken name - "phase management".
The principle of operation of the system: the control unit, comparing the available data, gives the command to the actuator electronically hydraulic mechanism that manages switchgear And moves it, resulting in changing:
- Time opening-closing valves (duration)
- Valve lift height
- Moment opening valves

What in turn causes:
- Increased power at a certain point
- Fuel economy
- Reduction harmful emissions in atmosphere

Under what conditions problems may begin:
- When approaching the car run to the warranty (about 100 thousand km)
- when improperly conducting
- when using poor-quality engine oil

What can problems be expressed (for example):
- Motor starts and stalls
- No robustness
- increased fuel consumption
- Acoustic sign of malfunction of this node: "incomprehensible cracking under the hood"

Learn more about the systems of changing phases of gas distribution can be read on the Internet-portal of the company Legion AvtoTode: Articles

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And the living in the subject of the issue can be performed on the working conferences held by the Legion-Avtodat company, for example:

In the photo below: Rapporteur Timofeev Evgeny Illarionovich, electromechanics engineer, more than 20 years dealing with diagnostics and maintenance car Honda. Passed training in Japan and Europe. The author of articles in printed publications. Specialist in complex technical problems.

And finally, it is not that the peculiarity, but the dumping moment is the generator fastening bracket.

Long piece of iron, going at an angle of 45 degrees ... Looks, let's say, unusual.

In general, this motor is felt by an edaki of ancient, a little from the seventies of the last century almost from the seventies. That's it seems modern carEverything is quite convenient, tightly contemporated, but some posyness is present. And this is perhaps even nice. It is certainly more pleasant to the VAG motors, on which even the ignition coils with the candles are not removed without a special puller.

Today we will talk about the Renault Logan 2 engine, discuss the pros, cons and features repair of DVS. So, in New Logan 2, Renault offers to the installation of three engines:

• 8-valve engine with a volume of 1.6 liters. and power 82 hp - model K7m.
• 16 Valve engine with a volume of 1.6 liters. and power 102 hp - model K4M.
• new 16 valve engine with a volume of 1.6 liters. and power 113 hp — H4M.

Consider the pros, minuses and maintainability of these engines.

• Engine Model - K7M
• Working volume - 1598 cm3
• Number of cylinders - 4
• Number of valves - 16
• Cylinder diameter - 79.5 mm
• Piston stroke - 80.5 mm
• Power hp - 82 at 5000 revolutions per minute
• Power kW - 60.5 at 5000 revolutions per minute
• Torque - 134 nm at 2800 revolutions per minute
• Compression ratio - 9.5
• Timber drive - belt
• Fuel consumption in the city - 9.8 liters
• Fuel consumption in a mixed cycle - 7.2 liters

Pluses of the engine K7M.

• and reliability of engines design;
• reliability: confirmed motor resource is more than 400 thousand km;
• universal and maintainable;
• easy maintenance;
• have a high torque;
• it provides good "elasticity" of engines, equal to 1.83.

Minuses of engine K7m.

• relatively high fuel consumption;
• there is instability of revolutions when working on idling;
• in the design there are no hydraulic components, so it is necessary to constantly adjust the valve (after 20-30 thousand km);
• there is a probability of valve bending with a sudden breakdown of the timing belt;
• the crankshaft seals often flow;
• low reliability;
• very noisy and prone to vibrations.

Engine repair K7M.

The video below shows how typical repair of the K7M engine on Logan is performed.

K4M - Renault Logan engine 1.6 liters. 16-valves 102 hp

• Engine Model - K4M
• Working volume - 1598 cm3
• Number of cylinders - 4
• Number of valves - 16
• Cylinder diameter - 79.5 mm
• Piston stroke - 80.5 mm
• Power hp - 102 at 5,750 revolutions per minute
• Power kW - 75 at 5750 revolutions per minute
• Torque - 145 nm at 3750 revolutions per minute
• Engine power system - distributed injection with electronically control
• Compression ratio - 9.8
• Timber drive - belt
• Maximum speed - 180 kilometers per hour
• Acceleration until the first hundred - 10.5 seconds
• Fuel consumption in the city - 9.4 liters
• Fuel consumption in a mixed cycle - 7.1 liters
• Fuel consumption on the highway - 5.8 liters

Pluses of the engine K4M.

• reliability, practical resource exceeds;
• compliance with Euro-4 environmental standards;
• increased power (102 hp);
• low noise and vibration resistance;
• more modern and reliable cooling system.

Compared to 8-valve engines, K4M 16V works much quieter, not prone to vibrations and has the same resource, but significantly high power and torque.

Minuses of engine K4M.

• expensive spare parts;
• "Bend" valves when the belt breakdown;
• the weak "elasticity" of the engine, equal to 1.53, as a result, problems with the acceleration of the car during overtakers.

Engine repair K4M.

The video below shows how typical repair of the engine K4M on Logan is performed.

H4MK - Renault Logan engine 1.6 liters. 8-valves 113 hp

In 2104, Renault Logan 2 Togliatti assembly began to establish a new 16-valve 1.6 liter engine. Atmospheric engine H4M. (or HR16 on Nissanovskaya classification) has a capacity of 113 hp And also installed on Renault Duster, Capture, Lada Ixray, Nissan Centra and Nissan Beetle.

From the Motor of the previous generation K 4M (volume 1.6 l., Power 102 hp) It is distinguished by an increased torque (152 against 145 nm), but the maximum torque is achieved on turns of 4000 instead of 3,750 rpm. IN new engine Renault Logan 2 built system of changing phases of gas distributionAnd instead of the timing belt, the timing chain finally appeared. In addition, the main transmission ratio is reduced: from 4.07: 1 Logan and Sandero.

• Engine Model - H4M
• Working volume - 1598 cm3
• Number of cylinders - 4
• Number of valves - 16
• Cylinder diameter - 78 mm
• Piston move - 83.6 mm
• Power hp - 114 at 6000 revolutions per minute
• Power kW - 83.8 at 6000 revolutions per minute
• Torque - 142 nm at 4000 revolutions per minute
• Engine Power System - Distributed Electronic Control Injection
• Compression ratio - 10.7
• GRM - chain
• Maximum speed - 172 kilometers per hour
• Acceleration until the first hundred - 11.9 seconds
• Fuel consumption in the city - 8.9 liters
• Fuel consumption in a mixed cycle - 6.4 liters
• Fuel consumption on the highway - 5.5 liters

Motor pluses H4M.

The main plus of the new motor has become improved elasticity and increased thrust on low revolutions. But the growth of the dynamics is not at all. The maximum speed rose only 2 km / h (172 km / h). But fuel consumption of new Logan in a mixed cycle Reduced from 7.1 to 6.4 liters. per 100 km.

Minuses of Motor H4M.

Sedans and hatchbacks with a new engine will be offered only with a manual gearbox. Modifications with a four-stage "automatic" will continue to equip the old engine K4M spanish productionAlthough with an automatic additional power would be better combined. It would be logical to appear with a new engine and a variator, like a crossover Capture, but so far there is not even plans.

Engine repair H4M.

Applicability on cars

Budget models cars Renault. Logan 1.4 and Logan 1.6 for almost a ten-year presence history on russian roads managed to conquer the recognition of many thousands of motorists. The concept of the French manufacturer, who resolved in the distant 1998 to create inexpensive and practical a carintended for emerging markets, in Russia received the most triumphant continuation and unexpected development.

If in 2005 it all started at the small platform of the Autoframos enterprise in Moscow with a "screwdriver" assembly of several thousand cars per month, then today Volzhsky automotive factory Lacks his annual plans, relying on the whole "Loganovskaya" model painting: Renault Logan, Renault Sandero, Lada Largus. Sales of these three models in the country in 2014 exceeded 160 thousand pieces.

In considerable degree, the popularity of these models of Renault ensured the use of proven and well-proven in other machines of the concern of the concern 8V as power units internal combustion (DVS) series K7J 1.4 L and K7M 1.6 liters. Flagship ruler For Renault Logan, it is customary to consider the 16V four-cylinder liquid cooling unit with the K4M index, the production of which, in addition to the parent company Renault Espana. Mastered also at the production sites AvtoVAZ. This 16-dipal motor with decent technical characteristics still equipped with other Renault models (Sandero, Duster, Kangoo, Megane, Fluence), as well as Lada Largus and Nissan Almera. G11.

Features of the design and DVS specification

Engine design K7J (manufacturer Automobile Dacia, Romania) 1.4 l / 75 hp It is inherited from the rather old Motors of the Renault 1980s corporation (EXJ series) and therefore looks somewhat archaic: here and the unusual chain drive of the oil pump used on units with the lower arrangement of the camshafts, and the ancient rims of timidation.

The remaining engine solutions 1.4 are standard and no different from other four-stroke 4-cylinder single SOHC Type Motors: Round vertical cylinder location, 2 valves per cylinder, drive Timing from a toothed belt, Liquid cooling and combined lubricant system (for the most loaded DVS parts. Lubricant Under pressure, to all other things - simple splashing). K7J is more than 400 thousand km of mileage. Motor 1.4 provides a car the following dynamics: the maximum speed is 162 km / h, a hundred picks up for 13 seconds.

Engine Renault Logan K7M 710 and its successor K7M 800 (production All the same Automobile Dacia) 1.6 l and 86 hp (K7M 800 - 82 hp) according to the design almost completely coincide with the K7J, also have, but have an increased piston increased by 10.5 mm, obtained by changing the height of the block.

Other clutch and flywheel (larger diameter) are also used, and the gearbox crankcase has minor modified changes. K7M resource Also exceeds 400 thousand km in running. Dynamic characteristics Motor: Speed \u200b\u200bat a maximum of 172 km / h, 100 km / h - for 11.9 seconds Unlike 1.4.

The greatest differences in the design and characteristics are observed at the engine K4M, despite the fact that this internal engine is 1.6 liters and 102 hp It is also the next development of the K7M series. Absolutely new 16-valve cylinder head with two lightweight camshafts and a new piston system. Here, finally, it is eliminated by the need for constant adjustment of the DVS valves through sufficiently short runs, is eliminated by the simple use of well-known hydrocomathers.

Motor speeds up cars up to 100 km / h in 10.5 seconds, reaching a maximum of 180 km - quite good characteristics. Frankly weak points in this unit are no longer: necessary changes In terms of pumps and thermostat, the ignition module has been refined.

Advantages and disadvantages of power units

Thus, a detailed analysis of the technical characteristics of all three samples of DVS, as well as practical experience of operating Renault Logan with these power plants Allows you to decide which motor is better. The more powerful Renault Logan engine is 2 1.6 liters with liquid cooling Nevertheless, somewhat preferably the "older brother" is 1.4 liters. Power 75 hp Just not enough For a comfortable control of a loaded car, either on the country track, nor in short "mining".

And in the 16V dispute with 8V, the first sample acts as an unconditional leader. The only characteristic on which 16V loses to its opponent - "Elasticity". For the rest of the characteristics 16V is better better. The engine V16 with liquid cooling of the Renault corporation is simply much more modern and gives more opportunities to the driver.

Power unit K4M is a representative of the French auto industry from Renault. These engines were installed not only on cars produced at the Renault factory, but also AvtoVAZ. The power unit is considered quite reliable and structurally simple.

Specifications

The K4M engine is a representative of the fourth series of motors from Renault. The power unit began to be produced in 1999. In fact, the engine is the evolution of the famous K7M, with minor modifications. So, the new power unit received new head cylinder block, distributional shafts and hydrocomathers.

The engine is not picky for fuel, it can be poured into it, both the 92nd and 95th gasoline.

Consider the main specifications power aggregate:

Applicability

K4M got quite large enough, especially for French cars produced Renault. So, consider what vehicles Mounted power unit: Renault Logan, Renault Sandero, Renault Kangoo. 1 and 2, Renault Duster, Lada Largus, Renault Megane 1, 2, 3, Nissan Almera G11, Renault Clio 2, Renault Laguna 1, 2, Renault SCENIC and RENAULT FLUENCE.

Service

Maintenance of the C4M power unit is held every 15,000 km of run. The experienced motorists recommend to reduce the intersavine interval to 10,000 km. This will allow you to save the engine properties more and expand its use resource.

The engine oil is 4.3 liters, and only 4 liters will be required to shift. Recommended replacement oils have the following labeling: 0W-30, 0W-40, 5W-30, 5W-40, 10W-30, 10W-40, 10W-60 and 15W-40.

Maintenance is carried out according to the following scheme:

TO-1: Oil change, replacement oil filter. It is carried out after the first 1000-1500 km of run. This stage is also called the cycle, since the motor elements are triggered.

TO-2: Second maintenance after 10,000 km run. So, change again motor oil and filter, as well as an air filter element. At this stage, the pressure on the engine and the valve adjustment is also measured.

TO-3: At this stage, which is performed 20,000 km after, the standard oil replacement procedure is carried out, replacement fuel filter, as well as the diagnostics of all engine systems.

TO-4: Fourth maintenance is perhaps the simplest one. After 300,000 km of mileage, only oil and oil filter element change.

TO-5: Fifth, for the engine, as a second breath. This time I change the timing, oil and filter, filtering elements fuel system and air filter. Also, checks are carried out in nozzles and spark plugs. Special attention should be paid to computer diagnostics.

Malfunctions and repair

The K4M engine, as all the power units of the series, is quite reliable, but it also has a number of problems that cannot be avoided. Consider the main faults that occur during the operation of the motor:

1. Whistle under the hood. In this contest, it is worth considering the generator belt, which most likely stretched out.
2. The motor stalls. Here there may be several reasons - a malfunction of sensors or spark plugs, a throttle contamination or air filter, or a problem in the onboard computer.
3. Angry sound. This means that the rings of the exhaust pipe burned.
4. Vibration. The right pillow of the power unit came out.
5. Fault of the ignition coil. It is treated with replacing the damaged element.

As can be seen, the motor's global problems does not have, and therefore it can be considered a reliable power unit.

Output

K4M engines are reliable and have a high use resource. Maintenance of the power unit must be held every 15,000 km, but here the experienced motorists are recommended to spend 10,000 km after 10,000 km. Malfunctions are present, but they are insignificant.

The engine does not tolerate the 92nd gasoline. Oil service dealer recommends spending every 15 thousand km. It includes almost 5 liters of oil 5W-40 or 5W-30. Air filter And the candles usually serve two times longer. Replacing the timing belt with rollers produced every 60 thousand km, the generator belt usually change with it, water pump Going 2 - 3 replacements.

Unlike a similar 8-valve motor, a sixteenthly adapter is much quieter, more economical and does not cause inconvenience. strong vibrations. However, the drivers note its imperfect elasticity, at high speeds of thrust for confident overtaking still lack.

More owners frustrating high price Spare parts and their meager range in stores, compared to older models, as well as the lack of protection: when the timing belt breaks, the valve always bends about the pistons.

His resource Motorists estimate approximately 400 thousand mileage kilometers.

These are budget SUVs that immediately gained quite popular, despite some disadvantages of the motors used in them.

Note that this motor is not new. It has been used since 1999 different cars: Megane, Clio, Laguna, etc. However, in this review, we consider the features of the K4M motor on the example of the car "Renault Duster". It so happened that the majority of car owners are about this model, which allows you to allocate weak sides Motor.

Cars are presented in different equipment. There is a complete set with gasoline engines. In particular, the buyer can choose between the versions of the K4M and F4R engines. They can be equipped with automobiles with front and rear drives. Starting on the F4R motor in this article we will not. Here will be considered characteristics, weak spots And the disadvantages of information will be useful to buyers who paid attention to the "Renault Duster", as well as drivers who have already bought this car Or plan to acquire any other machine with a K4M motor.

Engine modifications

For French engines "Renault" acts encoding for different types Motor - XNY ZZZ. In this encoding:

• X is a series of motor (in this case k).
• n - architecture. Figure 4 corresponds petrol engines With 4 valves per cylinder. Motors with injection distribution and two valves on the cylinder are indicated by a number 7.
• Y - engine volume designation.
• zZZ - the number that indicates constructive features Engine and the car itself on which it is installed. For example, even numbers denote models with mechanical boxes Expert transmissions - with automatic.

From here it follows that the K4M engine can have different modifications. Consider them all:

• The modification of the K4M 690 is used on Renault Logan cars since 2006. It has a capacity of 105 hp
• K4M 710 was put on Renault Laguna Cars C 2001 to 2005 possesses a capacity of 110 hp
• K4M 782 - used on "Renault Scenic" from 2003 to 2009 its capacity is 115 hp
• K4M 848 - Used since 2008 and to this day in Renault Megan cars. It has a capacity of 100 hp
• K4M 788 - used in Renault Megan from 2002 to 2008. The capacity is 110 hp.
• K4M 812/813/858 - Used in Renault Megan since 2001 and to this day.
• K4M 606/696/839 - Power 105 hp It is installed on the "Renault Duster" and "Renault Megan" since 2010.
• K4M - Used since 2012 on "Lada Largus", has a capacity of 105 hp

Engine characteristics K4M.

As you already understood, different modifications have different parameters. The engine K4M 1.6 16V has a capacity of 102 hp, and its torque is 145 nm. The motor is equipped with a power supply system with a distributed fuel injection and electronically controlled. Motor toxicity rate - "Euro 4". This means that gasoline Ai 92 and above can be poured. You can also select electronic system Engine control.

The car "Renault Duster" with this engine is able to develop speed up to 163 kilometers per hour, and its fuel consumption in the city will be 9.8 liters per 100 km and 6.5 liters per 100 km away - on the highway.

Note that the tuning of the K4M engine is possible. Some car owners produce a motor chip with a replacement of the exhaust on the barn. As a result, the motor gets an increase in horsepower (its power grows up to 120 hp).

Operating Rules

Any motor can be "killed" per day if it is incorrect to ride it. It needs to be properly operating and replacing all consumables on time. So, the oil needs to be changed every 15 thousand kilometers. Given the low quality of gasoline in Russia and the likelihood of buying a fake on the market, it is advisable to be replaced after 8-10 thousand kilometers. Pouring oil with a class SL, SM, and its viscosity depending on the operating conditions (temperature in the region) should be 5W30, 5W40, 5W50, 0W30, 0W40.

The timing belt must be changed once every four years or after every 60,000 kilometers. The air filter changes after every year or 15 thousand kilometers. Spark plugs need to be replaced 30 thousand kilometers. The latter is a coolant that needs to be changed every three years or after 90 thousand kilometers.

Well, it should be followed by turns, temperature regime Engine. remember, that working temperature Engine K4M is 90 degrees. It is allowed to heat the motor up to 120 degrees, but in no case cannot be allowed to ensure that the thermometer appears to the red zone.

Weak vehicles with engine K4M

About Engine K4M Reviews can be contradictory. Of these, we will highlight the main disadvantages of this engine:

1. After a run of 70-100 thousand kilometers, the valve cover fades oil.
2. The generator can quickly break. This element is one of the most unreliable in the system.
3. Manual gearbox noise even on new cars.
4. Crankshaft glands.
5. Timing belt.
6. Ignition.

All these are the weak points of the Renault K4M. Each of them will stop more.

Problem with fogging valve cover

In response, owners of cars with this engine complain that such a problem takes place. It can occur with different frequency. The main reason that causes it is the drop in the sealant density between the head of the cylinder block and the lid. If you see that the lid is covered with oil stains, then it is necessary to remove the cover, the old sealant is completely removed and install the head with a new layer of sealant. If the car is under warranty, then this problem is eliminated on the service within five minutes.

The problem of the timing belt

The instruction manual states that the timing belt must be changed every 60,000 kilometers. Be sure to follow this instruction, as the car owners argue that when the belt, the engine valves are bent. This is fraught with the installation of new valves, which is very problematic.

Auxiliary belt

Many car owners fail the engine due to belt wear auxiliary aggregates. And it is worn before the set time. This means that from time to time you need to look under the hood and look at the state of this belt. If noted that it starts to fumble, it should be replaced. If you do not change it on time, it can get under the crankshaft pulley, which will lead to the wedge of the engine.

Motor disadvantages K4M.

Among customer reviews, weak motors can be distinguished: high sensitivity to poor-quality gasoline. Many owners have a motor troit and is observed big flow Fuel. Also has place insufficient level Oils in the checkpoint.

And now more.

On low-quality gasoline

Justice for the sake of mention that most European, American and japanese cars have high sensitivity to poor-quality gasoline. Most likely, this is due to the fact that in Europe and Japan, gasoline is better, and car manufacturers make cars taking into account the use of high-quality fuel. In many refills in Russia, gasoline is sold, which is inferior to European in quality. Therefore, on the engine K4M (he did not exceed), you can observe short-term failures in the work when driving and swimming at idle. Therefore, a little fill in the 95th or 98th gasoline. It is necessary to refuel on proven gas stations yet.

Motor Troit

It often fails one of the ignition coils, nozzle or spark plug. It is possible to determine the specific reason by measuring compression in each cylinder. After detecting a malfunction of a non-working element is replaced. Usually the repair is not very expensive, but the trouble takes place.

Engine weakness is felt when driving

When using the K4M engine 1.6 l 16 valves, the motor is a weakness of a motor during overtaking or a sharp speed set. This is especially noticeable when the car is loaded with passengers. Some other motors with a volume of 1.6 liters and the same power work "more merry" and allow you to quickly gain speed.

Voracity

Despite the fact that Renault company actively advertises cars with this engine as economical, the engine voraciousness also takes place in the city cycle mode. However, when driving over long distances, when high speed and turnover consistently holds, the engine economically "eats" gasoline.

Therefore, we can conclude that cars with this motor are weakly suitable for urban conditions, where you often need to stop on traffic lights, stand in traffic jams and trimmed.

Insufficient oil level in PPC

When buying a car with this motor, it is desirable to pay attention to the oil level in the gearbox and distribution. Often, in the reviews, you can read that there is no discrimination.

Conclusion

Despite all weak points that are described above, the K4M motor is popular. In addition, the described disadvantages are not found on all these engines. Some car owners report that after 123,000 kilometers, there were no problems with the engine at all. So much may depend on the operating conditions, travel manners and maintenance. It is extremely important to change everything on time. consumables And order only original spare parts. They cost more, but the use of cheap non-original "consumables" can lead to serious repairs.

Therefore, with proper care, the engine will work for a long time and effectively. Yes, and in the case of buying a new car, you should not worry about breakdowns, because there is always warranty service.