The 2.0-liter Hyundai G4KA gasoline engine was produced from 2005 to 2013 and was installed on a number of well-known models of the Korean concern, such as Sonata, Magentis and Carens. There was a gas modification of this motor for taxi companies under its own index L4KA.
In 2002, the Global Engine Alliance was created by Hyundai-Kia, Mitsubishi and Chrysler Group, and two years later a whole series of gasoline internal combustion engines of similar design was introduced. 2.0-liter units received the Hyundai-Kia G4KA, Mitsubishi 4B11 or Chrysler ECN indices. They have distributed fuel injection, an aluminum cylinder block with cast-iron liners and an open cooling jacket, a 16-valve cylinder head without hydraulic lifters, a timing chain drive and a CVVT type variable valve timing system on the intake camshaft.
In the Asian market, a gas version of the engine received distribution under the L4KA index, which was distinguished by the absence of an inlet phase regulator and a camshaft position sensor. Also, a number of modifications of this motor, for example for Kia Carens, are equipped with a block of balancers.
Theta 2.0L family: G4KA, G4KD, G4KF, G4KH, G4KL.
The engine was installed on:
- Hyundai Sonata 5 (NF) in 2004 – 2010;
- Kia Carens 3 (UN) in 2006 – 2013;
- Kia Magentis 2 (MG) in 2005 – 2010.
Specifications
| Production years | 2005-2013 |
| Displacement, cc | 1998 |
| Fuel system | distributed injection |
| Power output, hp | 144 – 151 |
| Torque output, Nm | 187 – 194 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 86 |
| Compression ratio | 10.5 |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | CVVT |
| Turbocharging | no |
| Recommended engine oil | 5W-30, 5W-40 |
| Engine oil capacity, liter | 4.7 |
| Fuel type | petrol |
| Euro standards | EURO 3/4 |
| Fuel consumption, L/100 km (for Kia Carens 2008) — city — highway — combined |
10.8 6.6 8.1 |
| Engine lifespan, km | ~350 000 |
| Weight, kg | 134.3 |
Disadvantages of the Hyundai G4KA engine
- The units of the first generation of the Theta family are very reliable and scuffing due to the ingress of catalyst crumbs into the cylinders is much less common here than in Theta II engines. But due to the design features of the engine in the form of an open-jacketed aluminum block, thin cast-iron sleeves often lead over time, an ellipse appears and lubricant consumption occurs.
- The resource of the timing chain here is highly dependent on the owners, and with aggressive driving it can stretch up to 100 thousand kilometers, and this is fraught with a jump and bending of the valves. Together with the circuit, it is often necessary to change the phase regulator and the repair price doubles.
- Another weak point of this motor is the ever-flowing gaskets and oil seals, most often the lubricant crawls out of the crankshaft oil seals and from under the valve cover gasket.
