The Citroën HMY, designated EB2M, is a 1,360 cc inline-four petrol engine produced between 1998 and 2005. It features a single overhead camshaft (SOHC), 8-valve configuration with multi-point fuel injection and a cast-iron block, delivering 55 kW (75 PS) and 110 Nm of torque. The compact, low-cost design enables economical urban mobility in supermini and light commercial applications.
Fitted to entry-level models such as the Citroën Saxo, Berlingo, and C2, the EB2M was engineered for drivers seeking low purchase and running costs with acceptable refinement. Emissions compliance was achieved through closed-loop lambda control and a three-way catalytic converter, allowing most units to meet Euro 2 and later Euro 3 standards during its production run.
One documented reliability concern is premature water pump failure, particularly on high-mileage examples. This issue, highlighted in PSA Service Information Bulletin 99-05-17, is linked to bearing wear and seal degradation under sustained thermal cycling. From 2001 onward, revised impeller materials and upgraded seal design were introduced to improve coolant flow and reduce failure rates.
Production years 1998–2000 meet Euro 2 standards; 2001–2005 models comply with Euro 3 (VCA UK Type Approval #VCA/EMS/5433).
The Citroën EB2M is a 1,360 cc inline-four petrol engine engineered for entry-level and commercial models (1998–2005). It combines SOHC 8-valve architecture with multi-point fuel injection to deliver economical performance. Designed to meet Euro 2 and later Euro 3 emissions standards, it balances cost efficiency with evolving regulatory requirements.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,360 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 77.0 mm | |
| Power output | 55 kW (75 PS) @ 5,500 rpm | |
| Torque | 110 Nm @ 3,000 rpm | |
| Fuel system | Multipoint fuel injection (Siemens SIM2K) | |
| Emissions standard | Euro 2 (pre-2001); Euro 3 (2001–2005) | |
| Compression ratio | 10.4:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (interval: 90,000 km) | |
| Oil type | SAE 10W-40 (ACEA A2) | |
| Dry weight | 108 kg |
The EB2M delivers modest torque ideal for city driving and light load-carrying but requires strict adherence to the 90,000 km timing belt replacement interval to prevent valve-to-piston contact. SAE 10W-40 oil meeting ACEA A2 standards is essential for camshaft lubrication and longevity. Extended idling or aggressive shutdown after hot operation increases thermal stress on the water pump. Pre-2001 engines should be monitored for coolant leaks; revised pumps from 2001 onward reduce failure risk. Emissions systems require periodic lambda sensor checks to maintain catalytic efficiency and prevent misfires.
Oil Specs: Requires SAE 10W-40 (ACEA A2) specification (PSA SIB 99-05-17). Compatible with mineral and semi-synthetic formulations.
Emissions: Euro 2 certification applies to pre-2001 models only (VCA Type Approval #VCA/EMS/5433). Euro 3 applies to 2001–2005 production.
Power Ratings: Measured under ISO 1585 standards. Output achieved with 95 RON fuel (PSA TIS Doc. EB2-PERF02).
PSA Technical Information System (TIS): Docs EB2-TECH01, EB2-FI01, SIB 99-05-17
VCA Type Approval Database (VCA/EMS/5433)
ISO 1585: Road vehicles — Engine test code — Net power
The Citroën EB2M was used across Citroën's Saxo/Berlingo/C2 platforms with transverse mounting and front-wheel drive layout. This engine received platform-specific adaptations-shortened intake manifolds in the Saxo and revised ECU mapping in the Berlingo Multispace-and from 2001 the updated Berlingo adopted Euro 3-compliant emissions hardware, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side engine block near the exhaust manifold (PSA TIS EB2-ID01). The 8th VIN digit indicates engine type ('B' for EB2M). Pre-2001 units have a silver valve cover with black plastic timing cover; post-2001 models use a black valve cover with integrated breather. Critical differentiation from base TU3: EB2M features a red intake plenum and revised ECU mapping. Service parts require model-year verification—timing belts for pre-2001 engines are not compatible with later Euro 3 revisions due to pulley diameter changes (PSA SIB 01-06-13).
The EB2M's primary reliability risk is water pump failure due to delayed maintenance, with elevated incidence in high-mileage examples. Internal PSA field reports from 2003 indicated a significant number of pre-2001 engines suffered coolant leaks and overheating, while VCA MOT data shows cooling system faults remain a top cause of engine-related failures in classic Citroën models. Urban driving and short-trip operation increase thermal cycling stress, making adherence to service schedules critical.
Analysis derived from PSA technical bulletins (1998-2005) and UK DVSA failure statistics (2000-2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN HMY-EB2M.
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Regulation (EC) No 715/2007
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