The 1.5-liter Mitsubishi 4G91 gasoline engine was produced only from 1991 to 1996 and was installed on such models as the Lancer, Mirage, Colt and its Malaysian counterpart Proton Satria. This motor existed in two versions: with a carburetor or an injector.
4G9 family: 4G91, 4G92, 4G93, 4G94.
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 |
The engine was installed on:
- Mitsubishi Colt CA in 1991 – 1995;
- Mitsubishi Lancer CB in 1991 – 1995;
- Proton Satria in 1994 – 1996.
Disadvantages of the Mitsubishi 4G91 engine
- Engine modifications equipped with a carburetor are famous for frequent failures in its operation.
- Also in the engine, hydraulic lifters wear out very quickly and require replacement.
- If the idle speed regulator fails, the engine starts to stall constantly.
- About 150,000 km of run, rings usually lie down and a strong oil burn begins.
- A drop in the level of lubrication in the system here often results in turning the liners.
Frequently asked questions about the Mitsubishi 4G91
How much power does the Mitsubishi 4G91 make?
Power output of the Mitsubishi 4G91, hp: 97 (carburetor); 115 (MPI). Torque, Nm: 126 (carburetor); 135 (MPI).
How much oil does the Mitsubishi 4G91 take and which one?
Engine oil capacity: 3.5 liters. Recommended oil: 5W-30.
Does the Mitsubishi 4G91 have a timing belt or chain?
The Mitsubishi 4G91 uses a timing belt.
Is the Mitsubishi 4G91 turbocharged?
No, the Mitsubishi 4G91 is naturally aspirated.
Does the Mitsubishi 4G91 need valve clearance adjustment?
No, the Mitsubishi 4G91 has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Mitsubishi 4G91 last?
The typical lifespan of the Mitsubishi 4G91 is ~275 000 km with proper maintenance.
What is the fuel consumption of the Mitsubishi 4G91?
Mitsubishi Lancer 1993: city 9.0, highway 5.5, combined 6.7 L/100 km.
What cars was the Mitsubishi 4G91 installed on?
Mitsubishi Colt CA in 1991 - 1995; Mitsubishi Lancer CB in 1991 - 1995; Proton Satria in 1994 - 1996.
What are the common problems of the Mitsubishi 4G91?
Engine modifications equipped with a carburetor are famous for frequent failures in its operation. Also in the engine, hydraulic lifters wear out very quickly and require replacement. All known problems.
