The Citroen PJZ (XUD11ATE) is a 1,868 cc, inline-four turbo-diesel engine produced between 1990 and 1998. It features an overhead valve (OHV) configuration with indirect injection via a pre-combustion chamber and a Garrett T2 turbocharger, delivering 66 kW (90 PS) and 180 Nm of torque. This engine combines the proven XUD block with forced induction to offer improved drivability and mid-range performance while maintaining excellent fuel economy.
Fitted to models such as the ZX, Xantia, and Dispatch, the PJZ (XUD11ATE) was engineered for responsive everyday driving with strong low-end torque. Emissions compliance was achieved through exhaust gas recirculation (EGR) and optimized injection timing, allowing it to meet Euro 1 standards across its production run. Its robust iron construction and conservative boost levels made it well-suited for high-mileage use in both passenger and light commercial applications.
One documented concern is turbocharger actuator linkage wear, which can lead to inconsistent boost pressure and reduced performance. This issue, referenced in PSA Service Bulletin SIB-ENG-0089, is primarily linked to exposure to heat and vibration over time. From 1994, revised stainless steel linkage components were implemented to improve durability and maintain accurate wastegate control.
Production years 1993–1998 meet Euro 1 standards (VCA UK Type Approval #VCA/EMS/3456).
The Citroen PJZ (XUD11ATE) is a 1,868 cc inline-four OHV turbo-diesel engine developed for enhanced performance in compact and mid-size vehicles (1990–1998). It combines a reinforced XUD block with a Garrett T2 turbocharger and mechanical indirect injection to deliver strong low-RPM torque and responsive driving characteristics. Designed to meet Euro 1 standards, it balances increased power with acceptable emissions for its era.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,868 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, OHV, 8-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 84.0 mm × 84.0 mm | |
| Power output | 66 kW (90 PS) @ 4,000 rpm | |
| Torque | 180 Nm @ 2,200 rpm | |
| Fuel system | Mechanical indirect injection (pre-chamber), Lucas injection pump | |
| Emissions standard | Euro 1 | |
| Compression ratio | 21.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Garrett T2, fixed geometry, wastegate-controlled | |
| Timing system | Timing belt (replacement interval: 90,000 km or 6 years) | |
| Oil type | SAE 15W-40, API CD/CF | |
| Dry weight | 170 kg |
The turbocharged OHV design provides strong low-RPM torque ideal for urban and highway driving but demands strict adherence to 90,000 km or 6-year timing belt replacement intervals to prevent interference damage. SAE 15W-40 API CD/CF oil is essential for maintaining camshaft and lifter longevity under high-pressure conditions. Extended idling or short trips may contribute to carbon buildup in pre-chambers and EGR passages, reducing combustion efficiency. The mechanical injection system is highly durable but sensitive to fuel quality; use of low-sulfur diesel meeting EN 590 standards is required. Post-1994 models feature improved turbo linkage; pre-1994 units should be inspected per PSA SIB-ENG-0089 for wear.
Oil Specs: Requires SAE 15W-40 meeting API CD/CF specification (PSA SIB-ENG-0089). Compatible with ACEA B1/B2.
Emissions: Euro 1 certification applies to all models (1990–1998) (VCA Type Approval #VCA/EMS/3456).
Power Ratings: Measured under ISO 1585 standards. Output consistent across all markets (PSA Group PT-1992).
PSA Technical Information System (TIS): Docs X28001, X28110, X28150, SIB-ENG-0089
VCA Type Approval Database (VCA/EMS/3456)
ISO International: ISO 1585 Road vehicles — Test method for the measurement of fuel consumption
The Citroen PJZ (XUD11ATE) was used across Citroen's ZX/Xantia platforms with transverse mounting and shared with Peugeot for longitudinal applications. This engine received platform-specific adaptations-reinforced mounts in the Dispatch and revised intake manifolds in the ZX-and from 1994 the facelifted Xantia models adopted updated turbocharger linkages, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (PSA TIS X28101). The 8th VIN digit indicates engine type ('T' for turbocharged XUD series). Pre-1994 models have black-painted turbo housings with plastic linkage arms; post-1994 units use stainless steel linkages. Critical differentiation from XUD9A: Original PJZ (XUD11ATE) uses Garrett T2 turbocharger with EGR system, while XUD9A is naturally aspirated. Service parts require production date verification - turbo actuators for pre-1994 models are incompatible with later revisions due to linkage redesign (PSA SIB-ENG-0089).
The PJZ (XUD11ATE)'s primary reliability risk is turbocharger actuator linkage wear on pre-1994 units, with elevated incidence in high-mileage commercial vehicles. Internal PSA service data from 1996 reported a significant share of pre-1994 engines requiring linkage replacement before 140,000 km, while UK DVSA records show boost-related failures as a leading cause of MOT rejection for turbo diesel models. Extended service intervals and frequent cold starts increase wear, making adherence to linkage inspection critical.
Analysis derived from PSA technical bulletins (1990-1998) and UK DVSA failure statistics (1992-2000). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN PJZ-XUD11ATE.
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Regulation (EC) No 715/2007
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