Engine Toyota 1KZ under the hood

Engine Toyota 1KZ

In 1993, the 1KZ-TE engine was created and put into mass production. Until now, it is considered the most successful version of the diesel engine. This Toyota engine was able to displace 2L-TE diesel engines from the market in a short time.

Diesel engine 1KZ-T is a 4-cylinder engine equipped with water cooling and mechanical injection pump. The turbocharged diesel engine 1KZ-TE is equipped with an electronic injection pump. In this case, numerous data from the built-in sensors are used. 1KZ may seem complicated, but in fact, for a specialist it is not difficult to repair. Replacing the crankshaft or any attachment is easily accomplished in a workshop.


Manufacturer Toyota Motor Corporation
Also called 1KZ
Production years 1993-2006
Cylinder block alloy cast iron
Displacement, cc 2982
Power output, hp 125/3600
Torque output, Nm / rpm 287/2000
Engine’s type diesel
Configuration inline
Number of cylinders 4
Number of valves 8
Piston stroke, mm 103
Cylinder bore, mm 96
Compression ratio 21.2:1
Turbocharger Toyota CT12B
Fuel consumption, L/100 km (for Prado 90)
— city
— highway
— combined
Oil consumption, gr/1000 km up to 1000
Recommended engine oil 5W-30, 5W-40, 10W-30, 10W-40, 15W-40
Engine oil capacity, liter 7.0 (1KZ-TE)
7.7 (1KZ-T)
Oil change interval, km 10000
Engine lifespan, km
— official information
— real


Frequent problems

For 1KZ, the most relevant problems with the cylinder head. The head itself does not have a tendency to crack, and such problems can be caused by temperature conditions, therefore, it is necessary to monitor the cooling system and the indicators of the sensors.

In addition, it must be borne in mind that:

  • coolant likes to disappear, which can lead to overheating;
  • it is necessary to adjust the thermal clearances of the valves every 40 thousand km;
  • the resource of the timing belt usually does not exceed 100,000 km; in the event of a break, the valve bends.

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