Engine Hyundai-Kia G4JP

The 2.0-liter Hyundai G4JP engine was produced from 1998 to 2011 at a plant in South Korea under license, because structurally it was only an analogue of the Mitsubishi 4G63 power unit.

In 1998, Hyundai introduced an updated version of the 16-valve G4CP-D engine, which in its design was a modification of the popular Mitsubishi 4G63 engine. Here is a cast-iron cylinder block and an aluminum 16-valve head with hydraulic lifters, MPi distributed fuel injection, as well as a timing belt drive and balancer shaft unit.

Compared to the G4CP-D engine, the updated unit has a huge number of differences: it has a lightweight connecting rod and piston group and slightly different crankshaft and camshafts, as well as its own oil pump, thermostat, pump, control unit, intake and exhaust manifolds.

Sirius family: 1.6 L – G4CR; 1.8 L – G4CN, G4CM, G4JN; 2.0 L – G4CP, G4JP; 2.4 L – G4JS, G4CS.

The engine was installed on:

  • Hyundai Santa Fe 1 (SM) in 2000 – 2006;
  • Hyundai Sonata 4 (EF) in 1998 – 2011;
  • Hyundai Trajet 1 (FO) in 1999 – 2004;
  • Kia Magentis 1 (GD) in 2000 – 2006.

Specifications

Production years 1998-2011
Displacement, cc 1997
Fuel system distributed injection
Power output, hp 130 – 140
Torque output, Nm 175 – 185
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 85
Piston stroke, mm 88
Compression ratio 10.0
Hydraulic lifters yes
Timing drive belt
Turbocharging no
Recommended engine oil 5W-30, 5W-40
Engine oil capacity, liter 4.5
Fuel type 92
Euro standards EURO 2/3
Fuel consumption, L/100 km (for Hyundai Sonata 2003)
— city
— highway
— combined
12.4
7.1
9.0
Engine lifespan, km ~450 000
Weight, kg 150.8 (without attachments)

Disadvantages of the Hyundai G4JP engine

  • This unit is very picky about the quality of the oil and especially the timing of its replacement. Saving on lubrication often results in a wedge of balance shaft bearings and a break in their belt, which falls directly under the timing belt and it also breaks. All this leads not only to the bending of the valves, but also to fatal damage to the head.
  • Very often, owners of cars with this engine complain about strong engine vibrations. The culprits can be not only balance shafts, but also unreliable unit supports.
  • The use of low-quality oil here greatly affects the resource of hydraulic lifters. Sometimes they can fail and start knocking loudly at 50,000 kilometers.
  • Still here, floating speeds are often found due to contamination of the throttle or idle speed controller, and after 200 – 250 thousand kilometers, rings often lie and oil consumption appears.

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