In this article, we consider the G4GC engine, its technical characteristics, possible malfunctions, we give examples of possible tuning.
Description and decoding
The engine of this brand has 4 cylinders and operates in four-stroke mode. The cylinder block is melted from cast iron. The heads of the block are made of aluminum alloy.
Gas distribution mechanism of the engine G4GC(RM) consists of 16 valves and has two overhead camshafts, in addition to this there is a phase change system CVVT, which is located on the exhaust shaft. The timing begins its work with a belt drive, the belt itself must be replaced every 60,000 kilometers. This is done to prevent it from breaking.
The brand of the engine G4GC is interpreted as follows:
- G - type of fuel;
- 4 - the number of cylinders;
- G is a family of motor (in our case Betta, there is also Gamma);
- C - engine size (Gamma - 1.6, Betta - 2.0).
Specifications
Engine Specs G4GC:
- Production and year of manufacture - Ulsan plant, 2002.
- Volume - 1975 cubic centimeters.
- Capacity - from 137 to 143 liters. with. (6 thousand revolutions per minute).
- Power system - injector.
- Timing - 16 clans on 4 cylinders.
- Fuel - AI-92.
- The volume of engine oil and brand - 4 liters, 10W-30, 10W-40 (semi-synthetics).
- Fuel consumption (based on l / 100 km): city - 9.3, highway - 7.1, mixed - 5.9.
- The engine resource according to the manufacturer is 300,000 km.
- The environmental standard is Euro-4.
Motor brand G4GC installed on cars KIA modifications such as Cerato, Ceed, Spectra, Sportage, Carens. Also another car brand uses engine G4GC - Hyundai. This motor is installed on the following car brands from this manufacturer: Elantra, i20, Solaris, i30.
Possible engine tuning installed on KIA
In order to increase engine power, you can resort to the following methods:
- Engine calibration It is possible to increase power from starting 140 to 150 horsepower. Without a competent specialist you should not try this method.
- You can try to install straight-through exhaust("Spider 4-2-1") and add shafts with a phase of 268/264 or camshafts from the G4GM engine with a large valve lift, the volume of which is 1.8, then the engine power will increase to 160 horsepower.
- If finances allow, then you can makeorder camshafts with phase 270 with high lift. It is necessary to weld the turbocollector and ensure the supply of oil to the turbine, the diameter of the exhaust pipe should be 53 or 61 millimeters. You will also need the following items: nozzles brand 440, intercooler, Piping. Power will grow significantly - up to 180 horsepower. How long this engine is enough is another question.
Maintenance
Replacing the engine oil in the engine G4GCit is necessary to carry out every 15,000 kilometers, and under severe working conditions, on the recommendation of the plant, every 7,500. This procedure should be carried out on a hot engine; it is also worth replacing the fuel, oil and air filters.
Coolant (coolant) replacement is necessary.to produce in the event that the antifreeze changed its natural color to red and was covered with an oily film or there were other changes in its original form. In KIA cars, the replacement of coolant should be carried out on a cold engine, after that you need to warm up the engine and measure the amount of fluid in the expansion tank, making sure that there are no air traffic jams. If necessary, add fluid.
Possible malfunctions, their causes and elimination
The following malfunctions occur most often in a G4GC engine:
- Unstable engine operation in mode"acceleration-deceleration" and idling. The problem may be in the spark plugs, the ignition coil, or it is the result of the breakdown of high-voltage wires. In all cases, you need to change the defective item.
- Revolutions hang.Most likely, the reason lies in the wrong firmware of the electronic control unit (ECU), even a factory defect is possible. In this case, you must go to the service station and reflash the computer, it is best to perform it on a certified service station.
- Strong vibration of the engine at idle. The reason - the pollution of candles or throttle. There is nothing difficult to repair: just clean these elements.
- If the engine knocks, it means that the gaps in the timing valves are incorrectly adjusted - going to the service station will not be superfluous.
- The pronounced whistle when the engine is running indicates that the alternator belt is weakly tensioned, it is necessary to change the tensioning pulley.
- If the engine speed is floating, most likely the reason lies in pollution.
