The 2.6-liter Isuzu 4ZE1 gasoline engine was produced by the concern from 1988 to 1998 and was used by the company’s most popular models of its time, such as Trooper, Mu and Wizard. This power unit was mainly offered for all-wheel drive versions of SUVs.
Z-series family: 4ZD1, 4ZE1.
Specifications
| Production years | 1988-1998 |
| Displacement, cc | 2559 |
| Fuel system | injector |
| Power output, hp | 110 – 120 |
| Torque output, Nm | 195 – 205 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 8v |
| Cylinder bore, mm | 92.7 |
| Piston stroke, mm | 95 |
| 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 1990) — city — highway — combined |
15.4 9.9 12.5 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 160 |
The engine was installed on:
- Isuzu Faster 3 (TF) in 1988 – 1997;
- Isuzu MU 1 (UC) in 1989 – 1998;
- Isuzu Trooper 1 (UB1) in 1988 – 1991;
- Isuzu Wizard 1 (UC) in 1989 – 1998;
- Honda Passport 1 (C58) in 1993 – 1997;
- SsangYong Korando Family in 1991 – 1994.
Disadvantages of the Isuzu 4ZE1 engine
- This is a simple and reliable engine and most of its problems are purely age related.
- It is also very difficult to find a master who will undertake the repair of such a unit.
- The reason for floating engine speeds is most often the contamination of the throttle assembly.
- The fuel pump and the archaic ignition system have low reliability here.
- Periodically it is necessary to adjust the thermal clearances of the valves and change the timing belt.
Frequently asked questions about the Isuzu 4ZE1
How much power does the Isuzu 4ZE1 make?
The Isuzu 4ZE1 develops 110 - 120 hp and 195 - 205 Nm of torque.
How much oil does the Isuzu 4ZE1 take and which one?
Engine oil capacity: 4.4 liters. Recommended oil: 5W-40.
Does the Isuzu 4ZE1 have a timing belt or chain?
The Isuzu 4ZE1 uses a timing belt.
Is the Isuzu 4ZE1 turbocharged?
No, the Isuzu 4ZE1 is naturally aspirated.
Does the Isuzu 4ZE1 need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Isuzu 4ZE1 last?
The typical lifespan of the Isuzu 4ZE1 is ~300 000 km with proper maintenance.
What is the fuel consumption of the Isuzu 4ZE1?
Isuzu Trooper 1990: city 15.4, highway 9.9, combined 12.5 L/100 km.
What cars was the Isuzu 4ZE1 installed on?
Isuzu Faster 3 (TF) in 1988 - 1997; Isuzu MU 1 (UC) in 1989 - 1998; Isuzu Trooper 1 (UB1) in 1988 - 1991; Isuzu Wizard 1 (UC) in 1989 - 1998; Honda Passport 1 (C58) in 1993 - 1997; SsangYong Korando Family in 1991 - 1994.
What are the common problems of the Isuzu 4ZE1?
This is a simple and reliable engine and most of its problems are purely age related. It is also very difficult to find a master who will undertake the repair of such a unit. All known problems.
What engines are related to the Isuzu 4ZE1?
Z-series family: 4ZD1.
