Popular mid-size concern models like the 406, 407, 607, and 807 were equipped with the 2.2-liter Peugeot EW12J4 or 3FZ engine, which was manufactured in France between 1999 and 2009. This engine was modified to have a higher compression ratio (EW12E4 or 3FY).
The EW family of engines includes the EW7J4, EW7A, EW10J4, EW10D, EW10A, and EW12J4.
The engine was mounted on:
- Citroen C8 I (V3) in 2002 – 2005;
- Peugeot 406 I (D8/D9) in 2001 – 2004;
- Peugeot 407 I (D2) in 2003 – 2009;
- Peugeot 607 I (Z8/Z9) in 1999 – 2008;
- Peugeot 807 I (V2) in 2002 – 2005.
Specifications
| Production years | 1999-2009 |
| Displacement, cc | 2231 |
| Fuel system | injector |
| Power output, hp | 158 – 163 |
| Torque output, Nm | 215 – 220 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 96 |
| Compression ratio | 10.8 – 11.0 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | at the intake |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 5.0 |
| Fuel type | petrol |
| Euro standards | EURO 3/4 |
| Fuel consumption, L/100 km (for Peugeot 607 2002) — city — highway — combined |
12.5 7.2 9.1 |
| Engine lifespan, km | ~275 000 |
| Weight, kg | 150 |
Disadvantages of the EW12J4 engine
The utilization of two balancer shafts makes this engine structurally complex;
Owners most frequently complain about oil leaks from oil seals and valve covers; ignition system issues and sensor glitches come in second; the phase regulator may knock at 50,000 km, hydraulic lifters at 100,000 km; and the power unit makes a lot of noise, especially when it’s idle.