Engine power 4 g63 with yamaha head. What is a GDI engine? Sports version of the engine

4G63 is the legendary Mitsubishi Motors in-line four-cylinder automotive engine from the 4G6, old name G63B Mitsubishi Sirius series.

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✪ Operation of engine belts. Engine 4G63. Mitsubishi Outlander.

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Description

Engine capacity of 1997 cm3, in-line 4 cylinder. It has a cast iron block and an aluminum alloy cylinder head with SOHC or DOHC gas distribution systems - with one or two camshafts, 8 (12) or 16 valves. The block has two balancing shafts that rotate in antiphase, "to reduce vibrations of the third order." It was installed both longitudinally and transversely, after modification to the other side with pulleys. It could be carburetor (mikuni, solex, weber), two carburetor (lancer ex2000 rally), with single injection (two electric nozzles in the throttle body), injection (ECI-multi injection).

Story

Mitsubishi introduced new engines MCA Jet with reduced environmental pollution"

The first engines were introduced in 1976 on Mitsubishi Galant/Galant Lambda/Galant Sigma/Sapporo/Delica/Celeste models. The first engine was developed G62B, 1850 cm3. Immediately behind him appeared G63B differing only in volume, cylinder diameter and one casting on the block. In 1980, a turbocharged mono-injection version with 12 valves appeared, installed on the Lancer EX2000 and Galant Lambda / Sapporo, Starion, Tredia, Cordia. In 1984, the first 8-valve injection engine was introduced, at the same time the next largest 4G64-G64B engine appeared in the line (the difference is the cylinder diameters and piston stroke due to the crankshaft). In various modifications, the G63B existed on different models until 1986-88, after which the line of engines of the series Sirius was renamed to 4G63 and significantly modified, DOHC versions appeared, power and environmental regulations increased. In 1986, the first DOHC engine and immediately, on a rally car - DOHC turbocharged. With the renaming of the motor, the modification of 8 and 12 valves (SOHC) single injection was discontinued. At the same time, in 1986-87, engines of 16 valves DOHC 4G62 / 1800 cm3, 4G61 / 1600 cm3, 4G67 / 1800 cm3 appeared, which were a reduced copy of 4G63, and the cylinder head on the 4G62 and 4G67 DOHC motors was completely identical with 4G63 .

In 1993, the motor was significantly changed for the first time - a mod appeared. with 7 bolt flywheel. In parallel, the old 6-bolt modification continued to be installed on various cars. It is also worth mentioning third-party manufacturers that entered into unions with MITSUBISHI MOTORS in different years and brought this engine out of them on their machines in various modifications. originally HYUNDAI, and a 1985 Stellar, in 1998 HYUNDAI, with the help of its partner MITSUBISHI MOTORS, used a 4G63 cylinder head and a 4G64 cylinder block to create their new 2.4 liter engine for installation in Hyundai Sonata from 1998 to 2005 and for Kia Optima from 2000 to 2004. Korean manufacturers label it as G4JS. 4G63 remained unchanged from other manufacturers until 1994 on Hyundai Sonata, until 1999 on Proton Perdana, and is still produced by Chinese manufacturers.

The decline of 8 valve versions can be called the tightening of global environmental standards, and the effect of globalization, motors became needed not for 15 years, but for 7. The last 8 valve injection version was 1993, the carburetor version lasted longer due to cheapness and reliability - on commercial models until 1998 years in accordance with Euro-3 standards. In 1995, the 7-bolt modification was marked 4G63T, another DOHC cylinder head (so-called square head) and a turbocharged version. In 1997, the 6-bolt version of the DOHC turbocharged injector was discontinued. In 2003, a 7-bolt modification with the MIVEC system was introduced.

Between 1992 and 1997, a wide variety of versions of this engine were produced, it is worth noting some of the most unusual for an engine that gained fame in rallies and races. version 7-bolt derated SOHC 16 valve with carburetor, installed on Canter, L300, Delica. and a version of the 7-bolt SOHC 16 valve with an injector with a distributor transferred to the camshaft gear.

Characteristics

• The average power value (depending on the manufacturer's settings for different car models) in l. With. and options for combining the power system:
• 87 l. With. in 8 valve (SOHC) carburetor,
• 91 l. With. in 8 valve (SOHC) single injection,
• 105 l. With. in 16 valve (SOHC) carburetor,
• 110 l. With. in 8 valve (SOHC) injector,
• 130 l. With. in 12 valve (SOHC) turbocharged mono injection.
• 135 l. With. in 16 valve (SOHC) injector,
• 140 l. With. in 16 valve (DOHC) injector,
• 185* l. With. in 16 valve (DOHC) turbocharged injector.
• 170 l. With. in 16 valve (DOHC) injector with compressor**.
• * in the civilian version, the turbocharged engine was usually 185 hp, but on some models this power was raised to 220-240 hp. with., and the maximum factory value of 280 liters. With. was on rally cars, on the Galant VR4 model in the late 1980s, and was due to the FIA ​​requirement to limit the power of cars in the group “no more than 300 hp”. With."
• ** a small series produced an engine prepared in the AMG tuning studio with a mechanical compressor. was installed only on the Galant in the back of the E33A, but AMG had modified these engines earlier on previous generations of the model.

Application

List of cars where the 4G63 engine was used:

• 1981-1987 Mitsubishi Lancer EX2000 turbo
• 1994-2012 Mitsubishi Canter
• 1986-1989 Mitsubishi Cordia
• 1981-2002 Mitsubishi L300
• 1986-1991 Mitsubishi L200/Mighty Max
• 1982-1998

The Mitsubishi 4g63 engine is a four-cylinder engine designed for installation in passenger cars. It was first introduced in 1975 on vehicles such as the Mitsubishi Galant and Lambda. Then it was called G62B, after which G63B appeared. Unlike its predecessor, it had a larger working volume, a different cylinder diameter and a different casting on the block.

In 1980, a new version of the engine appeared, including mono-injection, as well as turbocharging and 12 valves. It was mounted on cars, namely Lancer EX2000 and Galant Lambda. The next stage in development came in 1984, when an inverter type of engine was introduced, equipped with 8 valves. After 1988, the engine line was renamed and the new version became known as 4g63. Compared to its predecessors, it had increased power and caused less harm to the environment.

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In 1993, there were significant changes in the design. A modification appeared that had a unique way of attaching the flywheel to the crankshaft with 7 bolts. In parallel with the new one, the old version with 6 fixing bolts was produced. The motor throughout its history was produced by MITSUBISHI MOTORS. The tightening of global environmental standards has led to the fact that the production of 8-valve versions of the engine has ceased. The last modification, equipped with an injector, was assembled in 1993. A similar version of the engine with a carburetor remained in mass production longer, due to high reliability and low price.

In 1995, a modification that had a 7-bolt mount became known as 4g63T. By the end of 1997, the 6 - and bolt version of the engine with an injector and turbocharging was finally discontinued. In 2003, the engine received a number of improvements and began to be supplemented by the MIVEC system.

Specifications

The Mitsubishi 4g63 engine is one of the most popular in-line four-cylinder internal combustion engines today. It has a number of technical characteristics:

• Weight is 160 kg.
• Cast iron is used in the production of cylinders.
• The power system belongs to the carburetor or injection variety.
• Motor power reaches 109 horsepower at 5500 rpm.
• The number of cylinders is four.
• There are 2 valves per cylinder.
• The piston stroke is 88 mm.
• The cylinder diameter is 85 mm.
• 95th gasoline is used as fuel.
• Fuel consumption reaches 13.9 liters per 100 km when it comes to working in a combined cycle.
• The oil is changed every 10,000 km.
• The engine resource is 200,000 km, according to the manufacturer's information, but in practice this figure can grow by more than 2 times with proper care.
• The power unit has characteristic features, for example, it has two balancing shafts installed in antiphase. Thanks to them, there is an almost complete elimination of vibrations that occur when working at maximum speed.
• The 4g63 engine can be mounted on vehicles that provide for both longitudinal and transverse installation of the power unit. This feature makes it possible to use the motor not only on full-size sedans, but also on compact cars designed for movement in urban areas.
• The engine number is located on the left side under the exhaust manifold. You have to use a mirror to see it.

Over the years of its existence, the power unit has established itself as a reliable and durable element of the car, regardless of the presence of turbocharging, single injection or injector.

Modifications

As mentioned above, over the years of its existence, the 4g63 motor has been improved and produced in various modifications, for example:

1. 4g63T, a feature of which was the presence of a turbocharger and a system that includes 12 valves. It had rather high rates of reliability and durability, but was not widely used due to problems with the turbine used. It was often mounted on a sports version of the vehicle. The power unit could produce up to 300 horsepower, which provided the machines with high dynamism.
2. She appeared in 1986 and used a gas distribution system called DOHC. Its presence made it possible to improve the power characteristics of the engine. This version fully complied with the strict requirements of Japanese environmental variety legislation.
3. 4g63 with four valves per cylinder. This option was equipped with a modified gas distribution system called SOHS. Distinctive features of this variety were high dynamic performance and low fuel consumption.
4. 4g64 appeared in 1993 and included a flywheel mounted on 7 bolts. The characteristic features of this modification are an improved injection and fuel injection system. Some Chinese manufacturers continue to install the 4g63 engine in their vehicles even today.

Citizens who purchase a vehicle with a similar power unit highly value their car. The motor has high reliability and maintainability.

Due to the special design, it is possible to tune the engine. Craftsmen who want to improve their powertrain should know that you can increase the power in various ways, for example, using modified shafts, installing a 4g63T turbo, using spare parts from a sports version, or installing a direct-flow exhaust system.

How reliable is the motor?

The 4g63 engine has a long service life and practically does not cause problems to its owner. Its use will save a large amount of money spent on maintenance and repairs. Despite the high level of reliability, the motor tends to fail over time. It is characterized by several problems that can be quickly fixed without contacting a specialized car service, for example:

1. The occurrence of vibration over time. The reason for this problem is the balance shafts, which receive insufficient lubrication when under high load conditions. If nothing is done, then the vibration can increase significantly, the shafts will eventually jam. Repair consists in replacing worn components and thoroughly lubricating rubbing parts in the future. In such a situation, it is recommended to replace the engine mounts, as they can also be damaged during vibration.
2. Unstable turns. The cause of such problems is a faulty temperature sensor, nozzles or throttle valve that requires cleaning. When fixing a problem, diagnostics plays the role of the most difficult moment, since it is not possible to use a computer in most cases.
3. The occurrence of an inexplicable knock in the engine under load. A similar phenomenon occurs after 50,000 km of run. The fact is that hydraulic compensators are subject to natural wear and tear and eventually become unusable. The motor starts to malfunction, and a characteristic knock plays the role of a harbinger of more serious problems. Troubleshooting can be done by replacing worn parts. To avoid such problems in the future, it is required to use high-quality oil and replace it every 10,000 km.

The described malfunctions occur most often after prolonged use of the motor. To prevent their occurrence, it is necessary to carry out regular maintenance, monitor the operation of the engine and, when the first signs of breakdown appear, diagnose.

The power unit is not difficult to repair and the motorist can perform all the necessary operations on his own. The motor is not suitable for operation at low temperatures. If the thermometer drops below -30 degrees, then it is not recommended to start a car equipped with 4g63, since difficult starting in such a situation is quite common, so it is not recommended to use it in severe frost.

For proper operation over a long period of time, only recommended oils should be poured into the engine. If we are talking about the 4g63 engine, then it is necessary to use a lubricant with the following marking.

Lubricant	Characteristic
0W-40	It is great for working in extreme conditions. The oil has features, namely a stable base, a small amount of additives, a long service life of additives, immunity to elevated temperatures, a decrease in the amount of heat generated, a strong protective film, and also facilitated starting the engine in cold weather.
5W-30	Well suited for engines installed on vehicles operating in urban areas. It ensures stable operation and prevents premature wear if the power unit is idling for a long time, is in a traffic jam, is operated for short distances and in dusty environments.
5W-40	It has a low level of fluidity and ignition temperature. Its use will avoid the formation of deposits that adversely affect the operation of the power unit. There is no need to flush regularly, since such oil does not have the ability to clog the motor.
5W-50	It can be used both for a new engine and for a power unit with a solid mileage. This lubricant is suitable for any season and provides reliable protection against early wear and corrosion. The lubricant has the ability to restore the performance of motor components, thanks to the antioxidants included in the composition.
10W-30	Good for all season use. In the manufacture, special technologies are used, as well as natural substances based on paraffin. It is able to significantly reduce the level of toxicity of exhaust gases, is not subject to oxidative processes, does not leave rust stains, prevents the formation of carbon deposits on various components and engine parts, and prevents premature wear.
10W-40	Suitable for a car enthusiast who wants to ensure stable operation of the motor in any climatic conditions. The oil contributes to economical fuel consumption, resists oxidation and forms a minimum amount of soot.
10W-50	Includes both mineral and synthetic substances. The use of such a lubricant increases the time intervals through which it is replaced. It has the ability to significantly increase the service life of the car, protect against settling of unwanted compounds on the metal elements of the engine and produce cooling during operation.
10W-60	This lubricant has a high viscosity and includes components that have a beneficial effect on seals. Its use is recommended for engines that have previously undergone significant wear. Lubrication is able to eliminate a variety of deposits formed in an engine with high mileage.
15W-50	It is a fully synthetic oil suitable for both gasoline and diesel engines. It is formulated with three esters complemented with the latest additives to ensure maximum performance. The lubricant is well suited for modified or sports engine varieties.

All types described can be used in the 4g63 engine at the request of the motorist or due to circumstances. It is recommended to fill in new lubricant in the engine every 7000 - 10000 km. The motor will hold up to 4 liters, but when replacing it, you should not pour in more than 3.5 liters. To do everything right, you must perform all the steps in accordance with the following algorithm:

1. Warm up the engine by allowing the vehicle to idle for a while.
2. Wait until all components of the internal combustion engine have completely cooled down for 30 - 40 minutes.
3. Choose a suitable container into which the used lubricant will be drained.
4. Unscrew the drain plug located on the bottom of the oil pan. To avoid spilling old oil, you need to unscrew the plug with a key, and then carefully remove it with your hands, substituting a container into which mining will flow with a strong stream.
5. Wait 5 minutes until all grease leaves the oil pan.
6. Pour in new lubricant through the top filler neck. When performing this operation, it must be remembered that it is impossible to make a complete replacement. In any case, about 3 - 4% of mining will remain, which will not affect the operation of the internal combustion engine.

The drained lubricant is checked for contaminants and unwanted impurities. Its analysis will determine whether the engine needs to be flushed or this procedure can be performed later.

When topping up, it is imperative to use a dipstick. First of all, 80% of the required volume is poured, after which the remainder is gradually topped up to the desired mark. Finally, a new oil filter must be installed.

On which machines is the Mitsubishi 4g63 engine installed?

Due to its high power, reliability, and long service life, the Mitsubishi 4g63 engine is used on a large number of vehicles in various modifications, for example:

• Mitsubishi Chariot, which is a Japanese-made minivan designed for urban driving. The 4g63 motor provides the machine with stable operation for a long period.
• Mitsubishi Space Runner. It is mounted on a diesel version of the internal combustion engine, equipped with 4 cylinders and direct injection. The car has a power reaching 82 hp. at 4500 rpm. The engine capacity is 1998 cubic centimeters.
• Mitsubishi Delica, whose power reaches 145 hp. This car is mounted 4g63 gasoline variety, equipped with distribution injection. The maximum torque reaches 210 N/m. The vehicle is a compact minivan suitable for both good and bad roads.
• Mitsubishi Eclipse is a sports car equipped with an increased power unit. It includes a 4g63 engine with a volume of 2 liters, both an atmospheric variety and a turbo. The vehicle picks up speed quickly and is well suited for high-speed driving on a flat road surface.
• Mitsubishi Galant is a middle class sedan with a high level of comfort. The use of the 4g63 internal combustion engine allows you to use the car for a leisurely drive around the city or a dynamic sprint on intercity routes. Distinctive features are power and reliability.
• Mitsubishi Lancer Evolution is a dynamic and sporty sedan. High power performance is provided by a two-liter turbocharged engine, which is equipped with an elongated diffuser and a variable valve timing system.
• Mitsubishi Pajero is equipped with a gasoline engine with a front longitudinal arrangement, which is equipped with an injection of a distributive variety. The car is a full-size Japanese-made SUV capable of overcoming obstacles of varying degrees of difficulty.
• Mitsubishi RVR is a compact minivan made in Japan. It is equipped with a power unit capable of delivering power reaching 139 hp. There is direct fuel injection, but there is no turbocharging. The car is suitable for driving on urban and rural roads. Good ground clearance allows the vehicle to overcome a variety of obstacles.

The machines described above are of different types and include power units with relevant properties. But do not forget that each modification was created on the basis of an internal combustion engine called Mitsubishi 4g63. Today, this motor continues to improve, but the power unit in question continues to be equipped with machines of various classes and varieties. Created about half a century ago, it does not lose popularity even in 2018.

Mitsubishi 4G15 engine 1.5 l.
Mitsubishi 4G15 engine characteristics
Manufactured by Mitsubishi Motors Corporation
Engine brand Orion 4G1
Years of release 1983-present
Cylinder Block Material Cast Iron
Power system carburetor/injector
Type in-line
Number of cylinders 4
Valves per cylinder 3/4
Piston stroke, mm 82
Cylinder diameter, mm 75.5
Compression ratio 9-9.5
Engine capacity, cc 1468
Engine power, hp/rpm 92-180/6000
Torque, Nm/ob.min132-245/4250-3500
Fuel 92-95
Environmental standards up to Euro 5
Engine weight, kg 115 (dry)
Fuel consumption, l/100 km
8.2 - city
5.4 - track
6.4 - mixed.
Oil consumption, g/1000 km up to 1000
Engine oil 5W-20 5W-30 10W-40
How much oil is in the engine 3.3
When replacing pour, l 3.0
Oil change is carried out, km 10000 (better than 5000)
Working temperature of the engine, hail.-
Engine resource, thousand km
- according to the plant
- in practice 250-300
The engine was installed
Mitsubishi Colt
Mitsubishi Lancer
Mitsubishi Dingo
Mitsubishi Maven
Mitsubishi Mirage
BYD F3
Dodge Colt
Eagle Summit
Hyundai Excel
Proton Saga
Proton Satria
Smart Forfour
Faults and repair of the Mitsubishi 4G15 engine
The popular 4G15 poltorashka, which has been produced for over 20 years, is, roughly speaking, a bored version of the 4G13 engine. The cylinder block was taken from a 1.3 liter engine and bored out for a 75.5 mm piston (was 71 mm). The cylinder head was originally used SOHC 12V single-shaft with 12 valves, later DOHC 16V, two-shaft 16-valve.
There are no hydraulic compensators on the 4G15, the motor requires valve adjustment every 90 thousand km, usually no one does this and is regulated only when extraneous knocks appear. Valve clearances on a hot engine, inlet valve 0.15 mm, exhaust 0.25 mm, on a cold engine, inlet 0.07 mm, exhaust 0.17 mm. The timing drive uses a belt, it lasts about 100,000 km, and if it breaks, it will bend the valve.
Some modifications were equipped with GDI direct injection, some versions of the 4G15 had a variable valve timing system MIVEC, and sports engines, along with Mivek, received a block with oil injectors and boost (4G15T). Similar engines were installed on Mitsubishi Colt Ralliart and Smart Forfour Brabus, developed power from 147 to 180 hp. on the Colt, and 177 hp. on Smart.
In addition, a 1.6 liter 4G18 engine was created on the basis of 4G15 / 4G13, a separate mention of it.
In 2004, the 4G15 engine received a successor and slowly began to give way under the hood to the new 4A91 engine.
4G15 malfunctions and their causes
1. Increased idle, floating speed. A very common problem, sooner or later appears on all 4G1 engines. It's all the fault of the throttle valve of a peculiar design that cannot withstand long-term operation. The problem is solved by purchasing a new original throttle assembly, or the same assembly, but modified by third-party manufacturers, where the factory wear problem is solved.
2. Vibrations. A common problem with Orion engines that does not have a clear solution. First you need to check the condition of the pillows, often this is where the problem lies. The problem can be solved by slightly raising the idle speed.
3. Difficult start, 4G15 does not start. Check the fuel pump, if it's cold outside, then, most likely, the candles are flooded. You should not be surprised, operating 4G13 -4G15-4G18 in severe sub-zero temperatures is not the best idea.
4. Zhor oil. The problem occurs on engines with a mileage of 200 thousand km (on 4G18 engines after 100 thousand km). It is solved by replacing the piston rings, and better overhaul.
In general, a motor of medium reliability and breakdowns are not uncommon here, in addition to the popular problems described above, there are also a number of smaller ones, and the use of high-quality fuels and lubricants partially protects against them.
When buying a car, it is advisable to choose an engine of a different series, for example, if it is a Lancer (most often), look towards the 4G63, as a more reliable and high-quality power unit.

Japanese cars are considered reliable and unpretentious in maintenance. Take, for example, solaris, which work in thousands of taxis. This at least speaks about the reliability of the car. It is clear that much depends on the engine, which is the heart of the car. Let's look at its technical characteristics, strengths and weaknesses. Already, one thing is for sure - this is a very good power unit, which is installed on many cars.

Some general information

The engines of the Japanese company Mitsubishi Motors Corporation, founded in 1985, are currently considered among the best in their price range. The Japanese have relied on reliability and durability, and have not lost. Orion occupies a special place among all power units - this is the 4G1 internal combustion engine line. These engines began to be mass-produced back in the 1970s, and production continues in our time.

Specifically, the 4G18 engine, the characteristics of which we will consider, has been produced since 1978. It is noteworthy that three types are installed on this motor. Therefore, they differ. Engine power, depending on the cylinder head, may be as follows:

• SOCH - 86-92 liters. With.;
• DOCH - 73-110 l. With.;
• TURBO - 163-180 at 6,000 rpm.

In the same way, depending on the type of cylinder head, the power system also differs. For example, for SOCH it can be carburetor or injection, for DOCH - GDI or Mivec, and for TURBO - Mivec + turbine.

Description of the 4G18 engine

In general, this power unit can be described as a classic. This is an in-line four with a lower location. Although the camshaft is also placed on top of the SOCH cylinder head. The use of a head with a DOCH gas distribution mechanism implies the use of two camshafts at the bottom.

The timing on this car is a belt type. Its service life is usually about 100,000 kilometers. But in severe operating conditions, it is recommended to change it every 70-80 thousand kilometers.

The cooling system is classic, closed type with forced circulation of the coolant. Delphi electronic control unit, model MT20U2. The first engines produced by the Japanese were equipped with a SOCH 12V gas distribution mechanism. There were 12 valves and one camshaft. In 1993, a more promising and new American DOCH system appeared. There were already two camshafts and 16 valves.

Sports version of the engine

It is worth paying your attention to the fact that there was also a turbocharged version of the 4G18 engine, a photo of which you can see in this article. In addition to the fact that such a power unit was equipped with a variable valve timing system MIVEC, it had a block with oil nozzles, as well as a turbocharger. The power of such a motor was about 180 horsepower. Very good with a volume of 1.5 liters.

Such a modification of the engine required a clear and fast operation from the control unit. The ECU had to cope with the following tasks:

• adjust idle speed;
• control the fuel injection system;
• monitor the ignition timing;
• perform self-diagnosis.

After 2004, Mitsubishi began to produce a newer engine instead of 4G18 - 4A91.

This motor model is considered one of the most durable. Around 1997, a record mileage was recorded on a Mitsubishi Mirage, which amounted to about 1.6 million kilometers. These figures speak about the quality of the motor better than any advertisement.

With careful operation and sparing modes, the performance of the motor practically does not deteriorate as it wears out. Scheduled repairs of the 4G18 engine are usually performed after 250 thousand kilometers. For this simple reason, scheduled maintenance turns into a routine replacement of consumables and fluids on a car. But it is advisable to comply with the regulatory deadlines prescribed by the manufacturer:

• engine oil change - every 8-10 thousand kilometers;
• Timing, rollers and oil seals - 90 thousand kilometers;
• replacement of antifreeze - 25 thousand kilometers.

The manufacturer recommends filling the system with synthetic motor oils that correspond to the ACEA A3, A5 class. Among them: VALVOLINE, SHELL and many others. Currently, many manufacturers of motor oils make a lubricant suitable for a Japanese motor, so this should not be a problem.

Typical malfunctions

As noted at the very beginning, 4G18 belongs to the 4G1 family, and it has all the weak points of this line. Let's look at the main problems of this motor and how to fix them. The first thing owners of this engine usually encounter is increased oil consumption after a run of 200,000 kilometers. In most cases, this is due to the critical wear of the piston rings, which must be replaced.

When they start in the engine, then most likely it is a matter of low-quality, unsuitable oil or non-observance of the replacement interval. The general planting of the internal combustion engine can also contribute to the appearance of a knock. To fix the problem, you must first clean the valves and cylinder head. Then to quality and proven. Also, do not delay the replacement.

Some more common problems

Many motorists are faced with the fact that at some point starting the engine is significantly difficult. This happens for several reasons. Firstly, this is characteristic of this motor when starting in a big frost. The manufacturer recommends not to operate the car at high negative temperatures.

It can also fill candles, again when starting in frost. And one more reason - the "dying" fuel pump. In this case, it is recommended to simply replace it. It is possible that the scheduled terms for replacing fuel filters were not observed, because of this, problems may also arise when starting the engine.

Another typical problem is vibration at idle. Unfortunately, the designers failed to eliminate this defect. Usually small vibrations are quite normal. But in any case, it is worth checking the condition of the engine mounts. It is possible that they are worn out and need to be replaced.

4G18 improvement

Very often this motor is tuned. Improvements can relate to many systems in a car, but without improving the engine, it is unlikely that the desired results will be achieved. Someone does not bother and simply replaces the 4G18 engine with a 4G63 or similar.

The simplest option is to order a Greddy E-ManaGe turbo kit, which is installed directly on the standard piston engine. But still, it is recommended to replace the nozzles with more efficient ones and install them from the 4G64 model.

If the owner decides to achieve power up to 350 horsepower, then it will be necessary to replace the standard pistons with forged ones and install H-shaped connecting rods. In this case, they change the crankshaft to a lightweight one and put the oil nozzle on the block. In this scenario, tuning costs will be impressive, so many experts recommend installing the 4G63 engine instead of the 4G18, whose power is 280 hp. With.

A little more about the motor

In a narrow circle of motorists, this motor is simply called "one and a half". It has been in production for over 20 years and is fully researched. In fact, 4G13, or rather, its bored version. The Japanese took a block from 1.3 liters with a 71 mm piston and bored it under a 75.5 mm piston. As for the gas distribution systems, we have already dealt with this, but I would like to note that the two-shaft American DOCH is considered the most reliable and most suitable for tuning. After all, SOCH is already obsolete.

The manufacturer recommends not to neglect the scheduled timing of timing belt replacement. This is due to the fact that in the event of a break, this immediately entails costs of approximately 40,000 rubles for major repairs. Despite the fact that this engine cannot be called whimsical, it must be regularly serviced and high-quality consumables used. Only in this case, you can count on long-term uninterrupted operation of the power unit.

Among motorists, the technical characteristics of the 4G18 engine and its level of reliability are rated as a solid four. Nevertheless, this is not the most trouble-free and unpretentious power unit from the Japanese. In order for it to work for a long time and properly, it is necessary to use high-quality oil, change it in time, and choose gentle operating modes.

Many advise when buying cars on which these power units are installed, to give preference to other models. Like it or not, development does not stand still, this also applies to internal combustion engines. Modern engines are made using other technologies. The use of various materials and alloys makes it possible to increase the strength and service life of parts. For example, the 4G18 engine does not have hydraulic lifters, so every 15 thousand kilometers it is necessary to adjust the valves. These are additional costs and not always small.

Finally

A 4G18 contract engine with a mileage of 50-80 thousand kilometers will cost about 60,000 rubles. If you start more or less serious tuning, then this is about the same or even more. In total, such a motor will take about 120 thousand rubles. If you take a 4G63 without a turbine, then it will cost no more than 45,000 rubles, a turbocharged version, along with attachments, will cost up to 70-75 thousand. Add here the minimum alterations to install the power unit, and the total will be about 100,000 or even less. If we take into account that this is a more reliable motor, then the expediency of such a procedure is obvious.

Of course, it is much easier to immediately buy a car with such an internal combustion engine. But they don't come across that often. Yes, and most Mitsubishi owners with a "one and a half" after a while think about increasing the power and dynamics of the car. In general, 4G18 cannot be called bad. This is a really high-quality motor, which at one time deserved recognition. But progress does not stand still, every year more and more advanced technologies appear. And if we compare 4G18 with those internal combustion engines that the Japanese make today, then this is heaven and earth.

GTI is an abbreviation for Gasoline Direct Injection, which implies the use of fuel injection directly into the combustion chamber on a gasoline engine. At its core, such an engine is a mixture of more common diesel and gasoline engines.

GDI engine: key features.

From the diesel engine GTI received, which is capable of supplying fuel at a pressure of about 5 MPa to the injectors of the combustion chamber and the principle of fuel injection at the final stage of compression. Here it is worth noting the increased compression ratio in the cylinders, which is not typical for conventional gasoline internal combustion engines.

From the gasoline engine, the GTI received, first of all, the type of fuel used - gasoline, and also spark plugs.

As a result of the synthesis of these two systems, GTI has acquired the following modes of operation.

Principle of operation.

In everyday measured city driving, the lean mixture enters the last stage of compression and is subsequently ignited by a spark plug. This lean operation mode only at low loads is due to the fact that a lean air-fuel mixture with an increased compression ratio can lead to overheating of the internal parts of the cylinder and such bad moments as glow ignition and detonation. It is for this reason that in conventional gasoline engines the compression ratio does not exceed 12 units, in contrast to diesel engines, where it is about 18.

During intensive urban and suburban high-speed trips that do not require a sharp increase in power, the fuel in the classic (stoichiometric) mixture for a gasoline engine enters at the intake stage.

If you need a sharp start, the GTI works in two of the listed modes at once. First, at the intake stage, an over-lean mixture is supplied, which is not capable of igniting from the hot elements of the cylinder (hot ignition), and at the last stage of compression, an additional portion of fuel is supplied to it, which generally increases the output of the engine, but at the same time eliminates detonation.

The main pros and cons of the GDI engine.

Pros.

The following advantages speak in favor of using GDI engines:

1. an increased degree of compression of the air-fuel mixture, in which it is possible to avoid such destructive processes as detonation and pre-ignition;
2. the ability of the engine to operate on an over-lean mixture without loss of power (the result is significant fuel savings);
3. reduced amount of carbon dioxide and other harmful substances emitted into the environment by reducing the amount of fuel burned.

Minuses.

However, due to the use of highly loaded and complex mechanisms in such systems, their owners still have to put up with:

1. higher cost at the stage of purchasing a car;
2. higher maintenance costs, since more complex fuel equipment requires more qualifications from maintenance personnel. Including will be more expensive and consumables, spare parts.

Perhaps in the future this situation will change, but for now it is as it is: any additional comfort and pleasure from driving a more powerful car, compared to those in the neighboring lane, requires additional investment.

Video.