Engine Mitsubishi 6G73

The company assembled the Mitsubishi 6G73 2.5-liter V6 gasoline engine from 1990 to 2002 and installed both on its models and on Dodge and Chrysler, as well as on Hyundai under the G6AV index. This motor exists in three different versions, including GDi direct fuel injection.

Like other members of the Cyclone family, the power unit is reliable and resource-intensive, powerful enough and relatively economical (average consumption is about 10 liters).

In 1990, a 2.5-liter engine appeared in the 6G7 family of gasoline V-shaped engines. It was the most common V6 power unit for that time with a 60 ° camber angle, a cast-iron block, aluminum heads with hydraulic compensators and a timing belt drive. All versions of this unit were equipped with 24-valve cylinder heads, but they differed in different models: engines with SOHC heads were installed on Dodge and Chrysler cars, and engines with DOHC heads on Mitsubishi.

In 1995, another version of the 6G73 engine appeared on the second generation of the Diamante model, which featured a GDi direct fuel injection system and a compression ratio increased to 11.

The 6G7 family also includes engines: 6G71, 6G72, 6G72TT, 6G74 and 6G75.

The engine was installed on:

  • Mitsubishi Diamante 1 (F1) in 1990 – 1996;
  • Mitsubishi Diamante 2 (F3) in 1995 – 2002;
  • Mitsubishi Galant 7 (E5) in 1992 – 1996;
  • Chrysler Cirrus 1 (JA) in 1995 – 2000;
  • Chrysler Sebring 1 (JX) in 1995 – 2000;
  • Dodge Avenger 1 Coupe (FJ) in 1994 – 2000;
  • Dodge Stratus 1 (JX) in 1995 – 2000.


Production years 1990-2002
Displacement, cc 2497
Fuel system distributed injection (MPI SOHC)
distributed injection (MPI DOHC)
direct injection (GDI DOHC)
Power output, hp 165 – 170 (MPI SOHC)
170 – 175 (MPI DOHC)
200 (GDI DOHC)
Torque output, Nm 220 – 230 (MPI SOHC)
220 – 230 (MPI DOHC)
250 (GDI DOHC)
Cylinder block cast iron V6
Block head aluminum 24v
Cylinder bore, mm 83.5
Piston stroke, mm 76
Compression ratio 9.4 (MPI SOHC)
10.0 (MPI DOHC)
11.0 (GDI DOHC)
Hydraulic lifters yes
Timing drive belt
Turbocharging no
Recommended engine oil 5W-30, 5W-40
Engine oil capacity, liter 5.0
Fuel type petrol
Euro standards EURO 3 (MPI SOHC)
Fuel consumption, L/100 km (for Mitsubishi Diamante 2000)
— city
— highway
— combined
Engine lifespan, km ~400 000
Weight, kg 195

Disadvantages of the Mitsubishi 6G73 engine

  • This distributed injection engine is not very demanding on fuel quality, however, many of these engines were equipped with a capricious GDi direct injection system, which can give you a lot of problems. Especially often the high pressure fuel pump fails.
  • Otherwise, this is a reliable motor and the owners regularly complain only about the oil burner. On a run of 200,000 km, valve stem seals wear out or rings lie down and then lubricant consumption appears. The main thing is not to miss the oil level, otherwise the liners will turn.
  • Even here, engine speed often floats and there can be quite a few reasons for this: contamination of the throttle, idle speed controller and injectors, broken wiring, burnt lambda probes, or a loosely installed manifold after replacing candles.
  • Despite the fact that there is a thick timing belt here and it lasts much longer than the regulations, breaks happen quite often. This is due to coking of the oil channel of the hydraulic tensioner or leakage of lubricant from under the front cover of the engine, the oil here oozes directly onto the belt.

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