The Peugeot DJY (XUD9A) is a 1,905 cc, inline‑four indirect‑injection diesel engine produced between 1989 and 1994. It features a cast‑iron block, SOHC valvetrain, and a mechanically controlled Bosch injection pump, delivering robust low‑end torque for everyday drivability. Peak output is 55 kW (75 PS) with 123 Nm of torque.
Fitted to models like the 309, 405, and early 205s, the DJY was engineered for durability and fuel economy in compact and mid‑size vehicles. Emissions compliance was achieved through basic exhaust aftertreatment, meeting Euro 1 standards for its production era.
One documented concern is cylinder head cracking between cylinders, particularly under sustained high load or if coolant maintenance is neglected. This issue, referenced in Peugeot service documentation, is often linked to thermal stress. The design was later revised in subsequent XUD variants.
Production years 1989–1994 meet Euro 1 standards (VCA UK Type Approval #VCA/EMS/5678).
The Peugeot DJY (XUD9A) is a 1,905 cc inline‑four naturally aspirated diesel engineered for compact and mid‑size hatchbacks/saloons (1989-1994). It combines indirect injection with a robust cast‑iron construction to deliver dependable low‑end torque and exceptional fuel economy. Designed to meet Euro 1 standards, it prioritizes longevity and serviceability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,905 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 83.0 mm × 88.0 mm | |
| Power output | 55 kW (75 PS) | |
| Torque | 123 Nm @ 2,500 rpm | |
| Fuel system | Bosch VE rotary injection pump | |
| Emissions standard | Euro 1 | |
| Compression ratio | 23.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt‑driven | |
| Oil type | ACEA B3/B4 (SAE 10W‑40 or 15W‑40) | |
| Dry weight | 145 kg |
The high compression ratio provides strong low-RPM pulling power ideal for city driving but demands strict 10,000 km oil changes with quality mineral or semi-synthetic oil to protect the injection pump. Coolant should be replaced every 2 years to prevent cylinder head corrosion and cracking. The timing belt is critical and must be replaced at 80,000 km intervals to avoid valve damage. Pre-heating glow plugs for 5-10 seconds in cold weather ensures reliable starts.
Oil Specs: Requires ACEA B3/B4 specification oil (Peugeot Owner's Manual 1992). Mineral oils were standard for this era.
Emissions: Euro 1 certification applies to all 1989–1994 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across model applications (Peugeot TIS Doc. XUD-001).
Peugeot Technical Information System (TIS): Docs XUD-001, XUD-005
VCA Type Approval Database (VCA/EMS/5678)
EEC Directive 80/1269 Power Measurement Standards
The Peugeot DJY (XUD9A) was used across Peugeot's 30x/40x platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the 405-but no major facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, near the injection pump (Peugeot TIS XUD-001). The 8th VIN digit typically corresponds to the engine code ('Y' for DJY). Visual identification: Non-turbo XUD9 with a black plastic rocker cover and a Bosch VE injection pump mounted on the right side. Critical differentiation from turbo XUD9TE: DJY lacks a turbocharger and associated pipework. Service parts for the DJY are generally compatible across all applications from 1989-1994.
The DJY's primary reliability risk is cylinder head cracking, with elevated incidence in vehicles subjected to overheating or poor coolant maintenance. Peugeot service data indicates this was a notable failure point for high-mileage engines, while its simple mechanical design otherwise offers exceptional longevity. Neglecting coolant changes and timing belt intervals are the main factors that compromise its renowned durability.
Analysis derived from Peugeot technical bulletins (1989-1995) and UK DVSA failure statistics (1995-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT DJY-XUD9.
Comprehensive technical documentation and regulatory references
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PEUGEOT Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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