Engine Isuzu 4ZE1

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.

Engines of the Z-series: 4ZD1, 4ZE1.


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
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.

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