Hyundai G4EC engine

This power unit of the Alpha series from a South Korean company was installed on a new Accent model. The G4EC engine fully met the manufacturer's expectations, rarely deteriorated and was reliably operated until the end of its service life.

Description of G4EC

1,5 liter G4EC

It has been serially installed on Hyundai since 1999. Installed on countless variations of the Accent, but since 2003 it has only been installed on versions for emerging markets. The manufacturer guarantees trouble-free operation of the internal combustion engine for 100 thousand km or 7 years of active operation.

Engine features are shown below.

1. The petrol "four" has two camshafts located on top of the cylinder head. One of them controls the operation of the intake valves, the second - the exhaust.
2. The motor is fixed on several flexible pillows under the hood of the car. Half of the supports are attached to the gearbox, the rest - directly to the motor.
3. The crankshaft is five-bearing, made of durable cast iron. 8 counterweights are molded together with the shaft. They reliably balance the element, eliminate vibrations during the working cycle. In addition, it is the counterweights that center the crankshaft, helping to better tune the engine during repairs.
4. Valve adjustment is not required on this engine. Hydraulic lifters are responsible for this function, everything happens automatically.
5. The oil system holds 3,3 liters of oil. The manufacturer recommends pouring 10W-30, and the owners recommend Mannol 5W-30 synthetics. As for gasoline, you can fill in the usual 92nd, but without unnecessary additives.
6. Engine power is 101 hp. With.

The usual arrangement of parts that work together with the engine.

1. On the right side of the G4EC, elements such as intake valves, power steering, air conditioning compressor found a place.
2. On the reverse side of the internal combustion engine is a thermostat, ignition coils.
3. An oil indicator, various pressure gauges, a generator, an oil filter are installed in the front.
4. At the back, a throttle assembly, an injection rail with injectors and a starter were found.
5. The upper compartment is closed with a plastic cover with wells in which the spark plugs are located.

The cylinder block of the engine is cast iron, it includes cylinders, oil channels, and a cooling device. From below, 5 main bearing supports, equipped with removable covers, are firmly attached to the BC.

Front view of g4-ec

Rear view of g4-ec

The oil filter deserves special attention on this internal combustion engine. It is full-flow, equipped with a real ventilation system of channels. Actively participates in the distillation of oil: first, the pump pumps out the lubricant from the crankcase, from where the liquid goes through the filter to the supply line. Then the oil enters the cylinder head and onto the camshafts. It goes to the valve lifters and bearings. At the end, the lubricant, passing through the drainage holes, descends again to the sump, thereby completing the circulation through the system.

It is noteworthy that the most loaded parts of the G4EC engine are lubricated with oil by spraying, under pressure. The remaining parts of the motor are covered with gravity lubrication.

Engine displacement, cc	1495
Maximum power, hp	102
Maximum torque, N * m (kg * m) at rpm.	133(14)/3000; 134 (14) / 4700
Fuel used	Gasoline AI-92
Fuel consumption, l/100 km; city/highway/mix.	9.9 liters/6.1 liters/7.5 liters
engine's type	In-line, 4-cylinder
Injection system	multipoint fuel injection
Cylinder diameter, mm	75.5
Number of valves per cylinder	4
Compression ratio	10
The piston stroke, mm	83.5
Cylinder head	aluminum 16v
Cylinder block	cast iron R4
Hydraulic compensators	in stock
Timing drive	belt
What kind of oil to pour	3.3 liters 10W-30
Environmental class	EURO 3/4
Approximate resource	250 000 km
What cars was installed on	Accent LC 1999 – 2012

Weaknesses of G4EC

The G4EC engine is generally reliable, but like any other unit running constantly under load, it begins to cause problems over time. Consider the most vulnerable places of this motor.

1. The cylinder head gasket needs to be replaced.
2. The timing belt requires periodic inspection and adjustment.
3. Power steering pump.
4. Pump.
5. The air conditioning compressor has a belt drive, which also needs to be adjusted. If the tension is weak, extraneous noise occurs, and if the tension is too high, the bearing collapses.

Common malfunctions

Most often, the following problems occur.

1. Interruptions and unstable work on the XX. At operating speeds, the engine loses power, consumes more fuel than before. As a rule, these signs indicate problems with the injector or fuel pump. Also not an exception are spark plugs that do not provide a good spark.
2. Uncharacteristic exhaust noise at idle. The sounds are uneven, multi-tone, with small or large pauses of silence. Symptoms indicate clogged injectors, faulty spark plugs.
3. Zhor oil. It occurs due to the occurrence of piston rings.
4. Strong vibrations. As a rule, this indicates wear on the engine mounts.
5. RPM float may be caused by a malfunction of the control unit. Flashing the BU will help.

Overhaul

Rarely occurs before the 100th run. However, everything is possible, especially with such gasoline and oil as we have in our country. There are known cases of overhaul on the G4EC engine, which has driven only 10 km.

What do they do in this case.

1. Open the cylinder head.
2. The honing is checked to ensure that there are no severe scuffs on the walls. The gasket, if the internal combustion engine has overheated, is stuck.
3. They test the state of the head itself so that nothing leads anywhere. Valves are checked for leakage and burnout. In most cases, a decision is made to replace the valve stem seals.
4. Check the piston group of the engine. On a knocked-in engine, broken or cracked piston rings are not uncommon. On G4EC this happens more often with 2 and 4 pots. Piston skirts also wear out, which is inevitable on a lightweight G4EC engine. On this one, the connecting rods are thin, without a proper margin of safety.
5. The oil drain holes are checked - they function or not. If yes, then the oil was filled in on time, there is no danger here.
6. Connecting rod bearings are inspected. Again, on a lighter internal combustion engine, wear is stronger here. Along the axis of rotation, the connecting rod is centered with the crankshaft journal. This provides protection for the connecting rod bearings. On the other hand, the presence of hydraulic lifters adversely affects the condition of thin-walled connecting rods.
7. The valves are checked, if everything is fine, then a decision is made to carry out grinding. All valves are polished with a drill to a shine, but care must be taken not to touch the chamfers. The valves themselves are expensive - a piece goes for 500 rubles. You can use any high-quality lapping paste, for example, Don Deal.

After that, the head is assembled. You can clean the combustion chamber with kerosene.

Under the hood Accent

An interesting solution from professionals regarding connecting rods. It is recommended to remake the engine by installing connecting rods with a wide neck. This will make it possible to center the piston in the cylinder not as before, but due to the neck, which is much more profitable in terms of resource and extraneous noise.

Family of similar motors

The G4EC engine belongs to the G4 engine family, which includes other analogues.

1. 1,3 liter G4EA. It was produced from 1994 to 1999. Installed only on Accent 1 and its analogues for import. The carbureted 12-valve and 4-cylinder G4EA developed 71 hp. With.
2. 1,5-liter G4EB, produced from 1999 to 2012. Installed on the Accent and its analogues. I used one SOHC camshaft. The injection 12-valve and 4-cylinder G4EB developed a power of 90 liters. With.
3. 1,6-liter G4ED, produced from 2000 to 2011. It was installed on many models of the Korean manufacturer, including compact vans. The injection motor developed 100-110 hp. With. G4ED engine 16-valve, with CVVT intake phase control.
4. The 1,3-liter G4EH left the assembly line in 1994 and was produced until 2005. The injection 12-valve engine developed a power of 75-85 hp. With.
5. The 1,4 liter G4EE was produced between 2005-2011. Injection version of the 16-valve power unit.
6. The 1,5-liter G4EK was produced from 1991 to 2000. It had various modifications, including a turbo version. Developed 88-91 liters. With. Produced in 12- and 16-valve versions.
7. The 1,5-liter G4ER was produced between 1996-1999. It was equipped with a 16-valve cylinder head, developed 99 hp. With.

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Accent User	hyundai accent, 2005, G4EC petrol, 1.5 102hp, HH range, max. frosts -30, 99% city, shift period probably 8t.km., like there is no filter, elf, LIQUI MOLY, mobil, motul, shell, zic, I found recommendations in the book SHSJ, 5w30, 10w40, mileage on the odometer 130t. km.; need help choosing oil
Zakir	the old owner said that he poured idemutsu eco extreme into G4EC, but there are very few places where they sell it,
Taliban	my friend runs 5w40. I would probably Lukoil Lux lil SN.
Andrei	you need oil with a high ash value
Blue	Mobil SUPER 3000 X1 FORMULA FE - 1370r; Shell Helix Ultra Extra - 1500 rubles; LIQUI MOLY Leichtlauf Special LL 5l - 1500r; yesterday there was a helix ultra E 5l for 1300r, but today it's gone
Xiapa	My dad filled last August with Gulf Formula FE 5W-30, with A1 and Ford approvals. Drove 5 thousand. So far, nothing has cracked. And not going to change
Maximus	a friend in the Accent (the engine is the same as yours, as well as the mileage is similar) is now flooded with the original 5w30 05100-00410. Doesn't complain. There are no problems with p / s in principle. You can fill up and ride safely. As with synthetics, adequate replacement time is paramount. Again, the condition of the oil scraper rings and valve stem seals is not known. Try checking the compression in the cylinders to have at least the slightest idea of ​​​​those. engine condition.
Jora	I need help with oil correction, 99% city, short trips 20-30 minutes, in winter without full warm-up, up to 2 tons, almost half a year has passed, and I dashed off 1200 km, respectively, there will be max. 3t.km., and because it is necessary to love to change once a year, which oils will be better?
Expert	Around 1000 rubles: -Rosneft Premium 5W-40, -Lukoil luys SL ps 5W-40, -shell hx7 SN ps 5W-40
I'm fine with you	given the short interval, gentle operation and short trips, I believe that it would be more preferable for you to use the same Lukoil Lux, but with a viscosity of 5W-30. Or any of the above viscosity 5W-40, + Rosneft Maximum 5W-40.

Ax	My old engine passed away, almost half a year passed and I decided to buy a contract engine. But when buying, questions began to arise, do you have an internal combustion engine with or without vvt-i. I read it, looked like on our ICE accents without vvt-i, ordered the engine from Ufa, they sent me a photo, help me determine whether this engine is suitable or not. I'm afraid that it may be with vvt-i (I don't know what kind of crap it is, and I don't know where to look for it either, and I don't know how it looks either), where is this vvt-i in the G4EC engine?
barik	Tell me who told you that these ancient engines have a VVT-I system. She is not there. Don't worry about this question. As for the engine, judging by the photo, it is under the automatic transmission. So, if nothing else bothers you, then take it.
Ax	When looking for internal combustion engines, the “G4EC” models began to be offered with VVT-I, although I clearly indicated an Accent. Apparently in the new accents of the 4th generation there are internal combustion engines with vvt-i. here is the question. What is the difference between an internal combustion engine for an automatic and a non-automatic? I just have a mechanic, will it fit me?
barik	You will need to rearrange the old engine to a new adapter plate and flywheel. On this option, a plate is installed under the machine and a damper (connecting) plate to the machine's pump.
Ax	well, it remains on the old one, it will be possible to remove and install on the new one. Thanks, reassured me. And then with this VVT-I, my whole brain blew up.
barik	Always happy to help. It’s just that they don’t put such a system on the Accent engine. This is a budget car and brand Hyundai. The Japs put themselves such a system and, accordingly, other controllers, and much more.
Brajan	some weird engine. it seems to be similar to the accent one, but the valve cover is different, the exhaust manifold is different (reminiscent of a turbo manifold in general) xs in general. And as mentioned earlier, you will have to install a flywheel, basket and clutch from a car with a manual transmission
Undzgauz	why mess with a wild unknown piece of the engine when it’s like dirt in the sale of normal engines that were put on tags huh?)
Rory	I was confused by the thermal screen on the exhaust manifold. I have a hole for the first lambda on the G4EC in the center of the screen.
Deer	This is a 1.8 or 2.0 liter engine. It was installed on Elantra, Coupe and Tiburon. My last car was a Tiburon 2.0 liter. That's exactly the kind of engine that stood there.
RudSamara	Engine. Checkpoint. G4EC 1.5 16v 102 HP 136 Nm of torque. Accent pancake rides well … The engine is very lively from the lowest speed. Although after 4500-5000 it seemed to me that it subsided a little. I couldn't find a graph of power and torque by rpm. The engine accent is enough — acceleration to 100 on the passport for 10.5 seems to me to give out. The ride is comfortable, traction is implemented in the most popular speeds. And there is one more pleasant moment - the engine is not strangled by the environment. The reaction to pressing the pedal is instant, it spins up instantly. Reminds me a bit of carbureted cars. The design is quite simple, the problems with the motors are rare - there is reliability.