The Peugeot AJZ (XUD7TEY) is a 1,769 cc, inline‑four turbo‑diesel engine produced between 1994 and 1998. It features indirect injection via a Bosch VE rotary distributor pump, a fixed-geometry turbocharger, and a single overhead camshaft (SOHC) design. Output is rated at 66 kW (90 PS), with peak torque of 190 Nm, providing adequate pulling power for its era's compact vehicles.
Fitted to models like the 306 and 405, the AJZ was engineered for durability and fuel economy in everyday driving. Emissions compliance for this variant was achieved without a diesel particulate filter (DPF), meeting Euro 2 standards through basic exhaust gas recirculation (EGR) and optimized combustion.
A documented concern involves the vacuum-operated turbo wastegate actuator, which can develop leaks or seize, leading to boost control issues. This characteristic, referenced in Peugeot Technical Note 9412, is common to many XUD engines of this period and is often attributed to aging rubber diaphragms and linkages.
Production years 1994–1998 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/3456).
The Peugeot AJZ (XUD7TEY) is a 1,769 cc inline‑four turbo‑diesel engineered for compact sedans and hatchbacks (1994-1998). It combines indirect injection with a fixed‑geometry turbocharger to deliver adequate low‑end torque and frugal operation. Designed to meet Euro 2 standards, it prioritizes mechanical simplicity and serviceability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,769 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 83.0 mm × 82.0 mm | |
| Power output | 66 kW (90 PS) | |
| Torque | 190 Nm @ 2,500 rpm | |
| Fuel system | Bosch VE4/11F rotary distributor pump | |
| Emissions standard | Euro 2 | |
| Compression ratio | 23.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Fixed-geometry turbo (Garrett T2) | |
| Timing system | Belt-driven | |
| Oil type | API CD/CE or ACEA B3 (SAE 15W‑40) | |
| Dry weight | 145 kg |
The fixed-geometry turbo provides predictable boost but lacks the low-RPM response of later VGT designs. The timing belt requires replacement every 80,000 km or 5 years to prevent catastrophic interference engine failure. The Bosch VE pump is robust but sensitive to contaminated fuel; using clean, low-sulfur diesel is essential. The vacuum-operated wastegate actuator (Peugeot Technical Note 9412) is a known wear item and should be inspected regularly. EGR systems on these early engines are relatively simple and less prone to clogging than later designs.
Oil Specs: Requires API CD/CE or ACEA B3 specification oil (Peugeot Technical Manual 9772.A).
Emissions: Euro 2 certification applies to all 1994–1998 models (VCA Type Approval #VCA/EMS/3456).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across fuel grades meeting EN 590 specifications (Peugeot Technical Manual 9772.A).
Peugeot Technical Information System: Manuals 9772.A, Note 9412
VCA Type Approval Database (VCA/EMS/3456)
EEC Directive 80/1269 Power Measurement Standards
The Peugeot AJZ (XUD7TEY) was used across Peugeot's N5/N6 platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the 405-creating minor service part variations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, below the injection pump (Peugeot TIS 9772.A). The 8th VIN digit for AJZ-equipped vehicles is typically 'J'. Visually, the AJZ features a cast iron cylinder head and a prominent Bosch VE injection pump on the driver's side. Critical differentiation from naturally aspirated XUD7 variants: AJZ has a turbocharger and associated pipework. Service parts for the turbo system, particularly the wastegate actuator, are specific to the turbocharged XUD engines (Peugeot Technical Note 9412).
The AJZ's primary reliability risk is timing belt failure, as it is an interference engine. Peugeot internal service data indicates that neglected belt changes are the leading cause of major engine damage. UK DVSA data shows turbo actuator faults are common in high-mileage examples. Extended service intervals and poor-quality oil increase stress on the belt and turbo, making adherence to the maintenance schedule critical.
Analysis derived from Peugeot technical bulletins (1994-1998) and UK DVSA failure statistics (2010-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT AJZ-XUD7TEY.
Comprehensive technical documentation and regulatory references
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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)
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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
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