From 1994 to 1999, the company produced the 1.8-liter Volkswagen ADZ 8v engine, which was used in several Seat vehicles as well as the third generation of the well-known Golf and Passat B4. In essence, this mono-injection power unit is an upgraded ABS motor.
RP, AAM, ABS, ADZ, PF, ADR, ARG, AEB, and ANB are all part of the EA827 1.8l series.
Specifications
| Production years | 1994-1999 |
| Displacement, cc | 1781 |
| Fuel system | single injection |
| Power output, hp | 90 |
| Torque output, Nm | 145 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 8v |
| 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 | 3.8 |
| Fuel type | petrol |
| Euro standards | EURO 1 |
| Fuel consumption, L/100 km (for VW Passat B4 1995) — city — highway — combined |
10.7 6.5 8.0 |
| Engine lifespan, km | ~320 000 |
The engine was installed on:
- Volkswagen Golf 3 (1H) in 1994 – 1999;
- Volkswagen Passat B4 (3A) in 1994 – 1996;
- Volkswagen Polo 3 (6N) in 1997 – 1999;
- Volkswagen Vento 1 (1H) in 1994 – 1998;
- Seat Cordoba 1 (6K) in 1994 – 1999;
- Seat Ibiza 2 (6K) in 1994 – 1996;
- Seat Toledo 1 (1L) in 1994 – 1999.
Disadvantages of the VW ADZ engine
Owners’ primary issues stem from malfunctions in the mono-injection system’s operation.
Here, you frequently have to deal with coolant or lubricant leaks.
Engine speed frequently floats as a result of air leaks or throttle contamination.
Here, the antifreeze temperature sensor and the lambda probe malfunction more frequently than others.
Rings or caps typically wear out and show signs of oil consumption after 200,000 kilometers.