Only manufactured between 1991 and 1996, the 1.5-liter Mitsubishi 4G91 gasoline engine was used in vehicles like the Lancer, Mirage, Colt, and its Malaysian equivalent, the Proton Satria. There were two versions of this motor: one with an injector and the other with a carburetor.
The engines 4G92, 4G93, and 4G94 are also part of the 4G9 family.
The engine was mounted on:
- Mitsubishi Colt CA in 1991 – 1995;
- Mitsubishi Lancer CB in 1991 – 1995;
- Proton Satria in 1994 – 1996.
Specifications
| Production years | 1991-1996 |
| Displacement, cc | 1496 |
| Fuel system | carburetor injector |
| Power output, hp | 97 (carburetor) 115 (MPI) |
| Torque output, Nm | 126 (carburetor) 135 (MPI) |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 78.4 |
| Piston stroke, mm | 77.5 |
| Compression ratio | 8.5 (carburetor) 9.5 (MPI) |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 3.5 |
| Fuel type | petrol |
| Euro standards | EURO 1 (carburetor) EURO 2/3 (MPI) |
| Fuel consumption, L/100 km (for Mitsubishi Lancer 1993) — city — highway — combined |
9.0 5.5 6.7 |
| Engine lifespan, km | ~275 000 |
| Weight, kg | 135 |
Disadvantages of the Mitsubishi 4G91 engine
Carburetor-equipped engine modifications are notorious for their frequent operational failures.
Hydraulic lifters in the engine also deteriorate quickly and need to be replaced.
The engine begins to stall continuously if the idle speed regulator malfunctions.
Rings typically lie down after 150,000 kilometers of running, and a severe oil burn starts.
Here, a decrease in the system’s lubrication level frequently causes the liners to turn.