Engine Hyundai Solaris G4FA

Description of G4FA

The G4FA engine has been produced since 2007. The model from the new Gamma family is installed on Korean class B cars, including Solaris and Elantra. The design of the motor includes a lightweight BC with thin cast iron liners.

Engine G4FA

The engine life declared by the manufacturer is 180 thousand km. This is even lower than that of VAZ models. But, of course, with a calm driving style and periodic replacement of worn-out consumables, 250 thousand km is not the limit for this engine. However, a large number of drivers do practically nothing, but only take the car for maintenance according to the schedule. Therefore, after the 100,000th mileage, difficulties begin.

Characteristics

G4FA Service Regulations

The timing chain works with tensioners, and, as the manufacturer assures, does not require maintenance during its entire operational life. Thermal clearances require manual adjustment, since the G4FA does not have automatic hydraulic compensators. This is done once every 90 thousand km - the valve clearances are adjusted by replacing the pushers. If you ignore this process, it will cause problems.

Sores G4FA

Korean engine cylinder head

Let's look at the known problems with the G4FA engine:

• noise, knocking, chattering;
• oil leak;
• floating revolutions;
• vibrations;
• whistling.

Noise in G4FA is caused by two reasons: the timing chain or valve is knocking. In 90 percent of cases, the chain knocks. This usually happens when the engine is cold, then as it warms up, the knocking noise disappears. If a hot engine makes noise, these are valves that require immediate adjustment. As for the chirping sounds and clicks, this is normal, you don’t need to do anything - that’s how the injectors work.

Oil leakage on G4FA is always associated with wear of the cylinder head gasket. You just need to replace it and continue to use the car. But the floating speed is caused by a clogged throttle assembly. You need to clean the damper, and if that doesn’t help, reflash the control unit.

A dirty throttle body can also cause engine vibration at idle. Strong engine jolts also occur from faulty spark plugs or clogged dampers. Replacing the spark-forming elements and cleaning the damper will help solve the problem. Very strong vibrations occur due to the weakened supports of the power plant.

It is noteworthy that the developers themselves warn engine owners that vibrations are possible at medium speeds due to the features of the G4FA model. Due to the universal, characteristic design of the power plant supports, all vibrations are transmitted to the steering wheel and other areas of the car. If at this moment you accelerate or suddenly release the accelerator pedal, the engine will come out of the mesomeric state and the vibrations will disappear.

And finally, a whistle. It comes from a sagging, insufficiently tightened alternator belt. To get rid of the unpleasant noise, you need to change the tensioner pulley.

The G4FA engine is called disposable by repairers. This means that it is difficult to restore; some elements are almost impossible to repair. For example, boring of cylinders to repair size, which is standard for many internal combustion engines, is not provided. We have to change the entire BC. But recently, some Russian craftsmen have learned to line the BC, thereby increasing the service life of the motor.

Engine Kia/Hyundai G4FA

G4FA modifications

The first modification is the 1.6-liter G4FC. The main differences between them are the volume and the presence of auto valve regulators on the G4FC. In addition, the FA produces 109 hp. s., and FC - 122 l. With. They also have different torque: 135 versus 155, respectively.

Recently, other versions have begun to be produced, already more modified - G4FJ and G4FD. The first unit is with a T-GDI turbine, the second is with a direct injection system. The Gamma family also includes the G4FG.

Tuning G4FA

Chip training is one of the easy, fast and cheap ways to increase traction. After such tuning, the power will increase to 110-115 hp. With. However, there will be no serious changes unless you install a 4-2-1 spider and increase the diameter of the exhaust pipes. The cylinder head will also need to be modified - the valves will need to be enlarged - and re-flashing. In this case, you can achieve an increase in power up to 125 hp. With. And if you add all this with sports camshafts, the engine will become even stronger.

What can chipping an internal combustion engine give?

Installing a compressor is the second tuning option. This is an extreme modernization measure, since the engine life in this case is noticeably reduced.

1. It is possible to prepare a new lightweight PN group for the ratio of the above-piston space to the combustion chamber volume of 8.5. Such a piston can easily withstand a pressure of 0.7 bar (not a very productive turbine).
2. For some strengthening of the cylinder head, it is recommended to install 2 gaskets instead of one. This is much cheaper, but this option will only withstand a boost of 0.5 bar.

In addition to the compressor itself, a new exhaust with a pipe diameter of 51 mm is installed. Engine power will increase to 140 hp. With. If you additionally machine the intake/exhaust channels, the engine will increase to 160 hp. With.

Installing a turbine is the third option for modifying the G4FA engine. However, in this case a more professional approach is needed. First of all, we need to weld a new reinforced manifold for the Garrett 15 or 17 turbine. Then organize an oil supply to the turbine, install an intercooler, 440 cc injectors and build a 63 mm exhaust. It cannot do without shafts, which should be made with a phase of approximately 270 and good lift. A properly tuned turbine will increase power up to 180 hp. With. The method is expensive - it costs almost half the price of the car.

The video shows the process of lining a 1.4L petrol G4FA engine block from Hyundai Solaris, Kia Rio and Kia Ceed (Hyundai Solaris, Kia Rio, Kia Ceed, etc.) with cast iron liners.

The cylinder block liner of the Hyundai Solaris 1.4 petrol engine with the marking: G4FA is part of the engine overhaul.

Lining G4FA is a rather technically complex process, so you won’t be able to do it yourself in your garage. The Kia Rio 1.4 block liner is used in cases where the cylinders have already exhausted their repair life, and boring will be ineffective or completely useless. There are also engines that do not require boring the block for a repair piston group at all. In addition, if the block has already been previously bored to the maximum repair size, there is no other option other than its sleeve. In all of the above cases, liners are used, which serve as new cylinder walls.

We perform the following repair operations on the Kia 1.4 G4FA unit:

1. Boring for repair pistons
2. Repair of crankshaft and camshaft bed
3. Grinding the crankshaft
4. Replacing the valve seat and guide
5. Cylinder head milling
6. Crimping
7. Technical Washing
8. Adjusting valve clearances
9. Camshaft repair
10. Welding cracks

After a special initial diagnosis, which is carried out using a bore gauge, one of the following decisions is made:

• Installing new liners in the engine block for a standard piston size
• Boring the cylinder block to fit the repair piston size

Many factors influence the deterioration of the cylinder walls. These include not only the natural wear and tear of the engine and cylinder block in particular, but also the ingress of foreign objects, the use of low quality oil and fuel (or driving with a low oil level), and engine overheating (violation of the temperature regime in general). When any problems arise with the Hyundai Solaris 1.4 engine, it is better to immediately contact specialists. So, you will not only save your time, but also prevent the situation from getting worse. Moreover, when the first signs of deterioration in engine performance appear, you can avoid replacing it and buying a new one by repairing individual parts, in particular the cylinder block liner.

- is a fairly popular request. And not without reason, because this is a very good service that can restore and improve the condition of the engine. In addition, after diagnostics and troubleshooting, we will be able to tell you the final repair price and if it is high, then we can replace your engine with a contract one.

Residents of Moscow and Moscow Region can come to our repair shop to line their engine any day of the week from 9:00 to 19:00. If there is no time or opportunity to come to you, we can send a courier, he will pick up your engine and bring the already lined motor back the next day. Residents of remote regions can use the services of any transport company.

If you notice any problems with the engine, don’t hesitate and call right away, we’ll help you fix any of your problems!