Engine Hyundai G4KG

The 2.4-liter Hyundai G4KG or Grand Starex 2.4 gasoline engine has been produced since 2007 and is installed on a wide range of commercial vehicles, including Starex minibuses. There is a gas version of this unit with a capacity of 159 hp under the index L4KB or 2.4 LPi.

In 2007, a 2.4-liter engine for rear-wheel drive models appeared in the Theta I line, which differed from a similar unit with the G4KC index in the absence of a block of balancers. The rest of the design is identical: there is an aluminum cylinder block with cast-iron liners, a 16-valve head without hydraulic lifters, an inlet dephaser and a timing chain drive. Also, the G4KG motor has a different intake manifold and of course without a geometry change system.

The modification of this engine with the index L4KB or 2.4 LPi, designed to run on liquefied gas, is widely used. This modification has slightly reduced power to 159 hp.

Theta 2.4L family: G4KC, G4KE, G4KG, G4KJ, G4KK.

The engine was installed on:

  • Hyundai Starex 2 (TQ) since 2007.


Production years since 2007
Displacement, cc 2359
Fuel system distributed injection
Power output, hp 170 – 175
Torque output, Nm 225 – 230
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 88
Piston stroke, mm 97
Compression ratio 10.5
Hydraulic lifters no
Timing drive chain
Phase regulator yes
Turbocharging no
Recommended engine oil 5W-30, 5W-40
Engine oil capacity, liter 5.1
Fuel type petrol
Euro standards EURO 4/5
Fuel consumption, L/100 km (for Hyundai Grand Starex 2010)
— city
— highway
— combined
Engine lifespan, km ~400 000
Weight, kg 130.9

Disadvantages of the Hyundai G4KG engine

  • The oil pump here is simple without balancers, so the liners do not rotate so often, but the scuffs in the cylinders occur regularly. In car services, they believe that the reason for their appearance is ceramic dust that enters the combustion chambers from the collector.
  • The culprits for the appearance of a strong oil burner can be not only scuffing in the cylinders, but also critical wear and just an ellipse of cast-iron liners. The aluminum block with an open cooling jacket holds the geometry very poorly and simply leads over time.
  • Despite the fact that, according to the manufacturer, timing chains are considered maintenance-free, in fact, their resource does not exceed 200,000 km, and sometimes they stretch even earlier. Around the same run, the phase regulator also has to be replaced.
  • Another weak point of this unit is the short-lived gaskets and seals. Usually grease oozes out from under the valve covers or through the crankshaft oil seals.

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