Several of the company’s popular mid-size models, such as the 406 and 407, were equipped with the 1.8-liter Peugeot EW7J4 or 6FZ engine, which was manufactured in France between 2000 and 2008. This power unit began to be replaced around 2006 by an upgraded EW7A engine.
The EW family of engines includes the EW7J4, EW7A, EW10J4, EW10D, EW10A, and EW12J4.
The engine was mounted on:
- Peugeot 406 I (D8/D9) in 2001 – 2004;
- Peugeot 407 I (D2) in 2004 – 2006;
- Citroen C5 I (X3/X4) in 2004 – 2008;
- Citroen Xsara Picasso I (N68) in 2000 – 2005.
Specifications
| Production years | 2000-2008 |
| Displacement, cc | 1749 |
| Fuel system | injector |
| Power output, hp | 117 |
| Torque output, Nm | 160 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 82.7 |
| Piston stroke, mm | 81.4 |
| Compression ratio | 10.8 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 4.25 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Peugeot 407 2005) — city — highway — combined |
10.5 6.0 7.7 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 130 |
Disadvantages of the EW7J4 engine
Lubricant leaks account for the majority of the power unit’s issues; oil frequently leaks from the breather, oozes from under the valve cover, or simply burns out.
Frequent ignition system component failures, particularly coil failures, rank second;
Contamination of the throttle or idle speed controller is the cause of the floating engine speed;
Engine mounts and hydraulic lifters frequently need to be replaced after 100,000 kilometers.