From 1985 to 1997, the company assembled the 2.3-liter Isuzu 4ZD1 carburetor engine, which was fitted to several of the company’s well-known SUVs and pickup trucks, including the Trooper, Mu, and Faster. An injection modification of this unit can be found on the Impulse coupe made in the United States.
Engines of the Z-series: 4ZD1, 4ZE1.
Specifications
| Production years | 1985-1997 |
| Displacement, cc | 2255 |
| Fuel system | carburetor |
| Power output, hp | 90 – 110 |
| Torque output, Nm | 165 – 185 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 8v |
| Cylinder bore, mm | 89.3 |
| Piston stroke, mm | 90 |
| Compression ratio | 8.3 |
| Features | SOHC |
| Hydraulic lifters | no |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 4.4 |
| Fuel type | petrol |
| Euro standards | EURO 1 |
| Fuel consumption, L/100 km (for Isuzu Trooper 1988) — city — highway — combined |
14.6 9.7 11.8 |
| Engine lifespan, km | ~275 000 |
| Weight, kg | 150 |
The engine was installed on:
- Isuzu Faster 2 (KB) in 1985 – 1988; Faster 3 (TF) in 1988 – 1997;
- Isuzu Impulse 1 (JR) in 1988 – 1990;
- Isuzu MU 1 (UC) in 1989 – 1993;
- Isuzu Trooper 1 (UB1) in 1986 – 1991;
- Isuzu Wizard 1 (UC) in 1989 – 1993.
Disadvantages of the Isuzu 4ZD1 engine
This motor is straightforward, dependable, extremely uncommon, and maintenance issues could arise.
The majority of this engine’s issues are caused by wear and tear from its advanced age.
Idle speeds frequently float here because of throttle assembly contamination.
Another small resource separates the fuel pump from the antiquated ignition system.
Every 100,000 kilometers, the timing belt must be replaced and the valve clearances adjusted.