Between 1987 and 1994, the company produced the 2.3-liter Audi 2.3 NG gasoline engine, which was fitted to the third and fourth generations of well-known models under the indices 80 and 90. The engine underwent a major update around 1991; some even write about two generations.
The EA828 series includes: RT, KU, NF, NG, AAR, AAN.
Specifications
| Production years | 1987-1994 |
| Displacement, cc | 2309 |
| Fuel system | KE-III-Jetronic |
| Power output, hp | 133 – 136 |
| Torque output, Nm | 186 – 190 |
| Cylinder block | cast iron R5 |
| Block head | aluminum 10v |
| Cylinder bore, mm | 82.5 |
| 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 2 |
| Fuel consumption, L/100 km (for Audi 80 B4 1993) — city — highway — combined |
12.4 7.7 9.2 |
| Engine lifespan, km | ~330 000 |
The engine was installed on:
- Audi 80 B4 (8C) in 1991 – 1994;
- Audi 90 B3 (8A) in 1987 – 1991.
Disadvantages of the Audi NG engine
The majority of this unit’s issues are related to the unpredictability of the KE-III-Jetronic system.
Air leaks or contamination of the idle valve are typically the cause of floating speed.
Unstable operation is frequently caused by a gasoline pump and clogged nozzles.
Here, certain ignition system components stand out for having poor dependability.
Hydraulic lifters frequently start to knock under the hood after 200,000 kilometers.