Engine Audi KU

The 2.2-liter Audi 2.2 KU gasoline engine was produced by the concern from 1984 to 1990 and was installed on the popular 100 C3 model in the 44th body. This motor was equipped with a rather difficult to maintain K-Jetronic mechanical injection.

The EA828 series includes: RT, KU, NF, NG, AAR, AAN.


Production years 1984-1990
Displacement, cc 2226
Fuel system K-Jetronic
Power output, hp 138
Torque output, Nm 188
Cylinder block cast iron R5
Block head aluminum 10v
Cylinder bore, mm 81
Piston stroke, mm 86.4
Compression ratio 10.0
Features SOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-40
Engine oil capacity, liter 4.5
Fuel type petrol
Euro standards EURO 1
Fuel consumption, L/100 km (for Audi 100 C3 1985)
— city
— highway
— combined
Engine lifespan, km ~350 000

The engine was installed on:

  • Audi 100 C3 (44) in 1984 – 1990.

Disadvantages of the Audi KU engine

  • The main problems for the owner are delivered by the K-Jetronic mechanical injection system.
  • The reason for floating speed is usually a broken throttle diaphragm or a dirty idle valve.
  • The fuel pump does not tolerate dirt and long driving with an almost empty tank.
  • Also, some components of the ignition system have low reliability.
  • At high mileage, hydraulic lifters often fail and start knocking.

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