The Citroën RGY (engine code XU10J2TE) is a 1,998 cc, inline-four petrol engine produced by PSA Group between 1993 and 2002. It features a dual overhead camshaft (DOHC), 16-valve configuration, and multi-point fuel injection (MPFI), delivering 100 kW (136 PS) at 6,000 rpm and 187 Nm of torque at 4,250 rpm. This naturally aspirated design emphasizes smooth power delivery and high-RPM performance for mid-size applications.
Fitted to models such as the Citroën Xantia, XM, and Peugeot 406, the XU10J2TE was engineered for refinement and driving comfort in executive segments. Emissions compliance was achieved through closed-loop lambda control and a close-coupled catalytic converter, enabling Euro 2 and later Euro 3 certification across its production run.
One documented reliability concern is inlet manifold runner actuator failure, highlighted in PSA Service Bulletin SIB-ENG-1998-07. This issue arises from vacuum diaphragm degradation and linkage wear, leading to incorrect airflow distribution and idle instability. Later production units incorporated revised actuator materials and updated ECU mapping to improve long-term function.
Production years 1993–1999 meet Euro 2 standards; 2000–2002 models comply with Euro 3 depending on market (VCA UK Type Approval #VCA/EMS/5682).
The Citroën RGY (XU10J2TE) is a 1,998 cc inline-four naturally aspirated petrol engine engineered for mid-size and executive vehicles (1993–2002). It combines multi-point fuel injection with a DOHC valvetrain to deliver smooth high-RPM power and strong drivability. Designed to meet Euro 2 and Euro 3 standards, it balances performance with emissions compliance for premium applications.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 86.0 mm × 85.8 mm | |
| Power output | 100 kW (136 PS) @ 6,000 rpm | |
| Torque | 187 Nm @ 4,250 rpm | |
| Fuel system | Siemens PMS6 MPFI (multi-point fuel injection) | |
| Emissions standard | Euro 2 (1993–1999); Euro 3 (2000–2002) | |
| Compression ratio | 10.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (interference design) | |
| Oil type | PSA B71 2000 (SAE 10W-40) | |
| Dry weight | 127 kg |
The DOHC 16V design provides smooth high-RPM power ideal for motorway driving but requires strict adherence to 100,000 km or 5-year timing belt replacement intervals to prevent catastrophic interference damage. PSA B71 2000 (10W-40) oil is critical due to its high-temperature stability and protection of the valvetrain. Extended high-speed operation increases thermal stress on the inlet manifold actuator. The Siemens PMS6 MPFI system is robust but sensitive to low-quality fuel, which can lead to injector coking. Lambda sensor checks are recommended to maintain emissions compliance and idle stability. Vacuum line inspection is essential to prevent actuator failure.
Oil Specs: Requires PSA B71 2000 specification (PSA SIB-ENG-1998-07). Compatible with ACEA A3 but not a substitute.
Emissions: Euro 2 certification applies to 1993–1999 models (VCA Type Approval #VCA/EMS/5682). Euro 3 compliance confirmed for 2000–2002 units in UK markets.
Power Ratings: Measured under ECE R85 standards. 100 kW output optimized for sustained highway performance (PSA TIS Doc. P10901).
PSA Technical Information System (TIS): Docs P10850, SIB-ENG-1998-07
VCA Type Approval Database (VCA/EMS/5682)
ISO 1585:1996 Road vehicles — Test code for net power of internal combustion engines
The Citroën RGY (XU10J2TE) was used across Citroën's X-platform with longitudinal mounting and shared with Peugeot for executive applications. This engine received platform-specific calibrations—longer intake runners in the XM and revised exhaust manifolds in the 406—and from 2000 the facelifted Xantia adopted the Euro 3-compliant XU10J2TE variant with updated lambda control, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the front-facing side of the cylinder block near the transmission bellhousing (PSA TIS P10890). The 8th VIN digit indicates engine family ('X' for XU series). Pre-2000 models have silver valve covers with black plastic cam covers; post-2000 units use black valve covers. Critical differentiation from XU10J2C: XU10J2TE has MPFI with electronic throttle and inlet manifold actuator, while XU10J2C uses carburetion. Service parts require build date verification—timing belts before 06/2000 are incompatible with later Euro 3 variants due to revised tensioner design (PSA SIB-ENG-1998-07).
The XU10J2TE's primary reliability risk is inlet manifold runner actuator failure, with elevated incidence in vehicles with high mileage. Internal PSA field reports from 2000 indicated a significant number of pre-2000 units required actuator replacement before 120,000 km, while UK DVSA data links a notable share of emissions-related MOT failures to lambda sensor drift in high-mileage examples. Extended high-speed driving and poor maintenance increase thermal and deposit-related stress, making maintenance interval adherence and fuel specification critical.
Analysis derived from PSA technical bulletins (1995–2002) and UK DVSA failure statistics (2003–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN RGY-XU10J2TE.
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