The Peugeot RFR (EW10J4) is a 1,997 cc, inline‑four petrol engine produced between 2001 and 2010. It features an aluminium block and head with double overhead camshafts (DOHC) and 16 valves. This naturally aspirated unit delivered 100 kW (136 PS) and 190 Nm of torque, offering a refined and linear power delivery characteristic of its era.
Fitted to models such as the Peugeot 307, 407, and Citroën C5 and C8, the RFR was engineered for smooth, comfortable cruising and responsive mid-range performance. Its design prioritised refinement and low NVH levels. Emissions compliance for most units was achieved to meet Euro 3 and later Euro 4 standards through sequential multi-point fuel injection and advanced catalytic converter technology.
One documented concern is premature failure of the dephaser pulley (variable valve timing actuator), which can cause timing issues and reduced performance, as noted in Peugeot Technical Note 0815 A. This failure is often attributed to oil contamination or degradation affecting the internal solenoid and locking pin mechanism.
Production years 2001–2005 meet Euro 3 standards; 2006–2010 models meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/6789).
The Peugeot RFR (EW10J4) is a 1,997 cc inline‑four naturally aspirated petrol engine engineered for mid-size sedans and MPVs (2001-2010). It combines sequential multi-point fuel injection with DOHC 16-valve architecture and variable valve timing to deliver smooth, linear power. Designed to meet Euro 3 and Euro 4 standards, it balances refinement with adequate performance for highway driving.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 85.0 mm × 88.0 mm | |
| Power output | 100 kW (136 PS) @ 6,000 rpm | |
| Torque | 190 Nm @ 4,100 rpm | |
| Fuel system | Siemens Sagem 34P sequential multi-point injection | |
| Emissions standard | Euro 3 (2001-2005); Euro 4 (2006-2010) | |
| Compression ratio | 10.4:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven with variable intake cam timing (dephaser) | |
| Oil type | PSA B71 2290 (SAE 5W‑40 or 10W‑40) | |
| Dry weight | 128 kg |
The variable valve timing (dephaser) provides a broad torque curve for relaxed cruising but requires strict adherence to 120,000 km timing belt replacement intervals, including the dephaser pulley, to prevent catastrophic failure. Using oil meeting PSA B71 2290 specification is critical to ensure the dephaser solenoid operates correctly. The Siemens Sagem ECU is generally reliable but sensitive to voltage spikes. Ignition coils are a common wear item after 150,000 km.
Oil Specs: Requires PSA B71 2290 specification oil (Peugeot Service Manual 0815). ACEA A3/B4 is the minimum acceptable standard.
Emissions: Euro 3 certification for 2001-2005; Euro 4 for 2006-2010 (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under ISO 1585 standards. Output is consistent across model applications (Peugeot Group PT-2003).
Peugeot Technical Information System: Docs 0815, 0815 A
VCA Type Approval Database (VCA/EMS/6789)
ISO 1585: Road vehicles — Engine test code — Net power
The Peugeot RFR (EW10J4) was used across PSA Group's PF3 platform with transverse mounting and shared with Citroën. This engine received minor ECU mapping variations between models-for instance, slightly different throttle response in the 307 versus the 407-but core mechanical components remain interchangeable. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Peugeot TIS Doc. 0815). The 8th VIN digit typically corresponds to the engine type ('R' for RFR in many PSA applications). Visually, it can be identified by its silver aluminium cam cover with "16V" and "EW10" embossed on it. Critical differentiation from the earlier EW10J2 engine: The RFR (EW10J4) features a variable intake cam timing system (dephaser pulley) on the intake camshaft, identifiable by a solenoid and wiring harness on the front of the cylinder head. Service parts for the timing system are specific to the EW10J4.
The RFR (EW10J4)'s primary reliability risk is dephaser pulley failure, with elevated incidence in high-mileage engines subjected to infrequent oil changes. Peugeot Technical Note 0815 A documents this issue, while general owner feedback highlights timing belt failures as a major cause of engine destruction. Extended service intervals make adherence to the maintenance schedule critical.
Analysis derived from Peugeot technical bulletins (2001-2010) and general owner-reported failure data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT RFR-EW10J4.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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