From 1984 to 1990, the company produced the 2.2-liter Audi 2.2 KU gasoline engine, which was fitted to the 44th body of the popular 100 C3 model. This motor had a K-Jetronic mechanical injection system, which can be challenging to maintain.
The EA828 series includes: RT, KU, NF, NG, AAR, AAN.
Specifications
| 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 |
12.1 7.6 8.8 |
| Engine lifespan, km | ~350 000 |
The engine was installed on:
- Audi 100 C3 (44) in 1984 – 1990.
Disadvantages of the Audi KU engine
The K-Jetronic mechanical injection system is the primary cause of the owner’s issues.
Floating speed is typically caused by a dirty idle valve or a damaged throttle diaphragm.
Long drives with nearly empty tanks and dirt are too much for the fuel pump to handle.
Additionally, a few ignition system parts are unreliable.
Hydraulic lifters frequently malfunction and begin to knock at high mileage.