The Ford JJA is a 1,596 cc, inline-four, naturally aspirated petrol engine produced between 2008 and 2011. It features a single overhead camshaft (SOHC) design with 8 valves and sequential multi-point fuel injection (SFI), delivering 77 kW (105 PS) at 6,000 rpm and 145 Nm of torque at 4,000 rpm. Engineered for compact B-segment vehicles, the JJA balances fuel efficiency with adequate urban performance.
Fitted primarily to the Ford Fiesta Mk6 (B250) and Ford Ka (T250), the JJA engine was designed for economical ownership and ease of servicing. Its driving character emphasizes smooth throttle response and low running costs, making it suitable for city commuting. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, enabling Euro 4 certification across all production years.
One documented concern is premature wear of the timing belt tensioner, particularly in vehicles with extended service intervals. This issue, referenced in Ford Service Action 08B12, is associated with coolant contamination and non-approved antifreeze mixtures. From 2010, Ford introduced a revised tensioner design with enhanced polymer resistance to improve long-term durability.
All production years (2008–2011) meet Euro 4 emissions standards (VCA UK Type Approval #VCA/EMS/6789).
The Ford JJA is a 1,596 cc inline-four naturally aspirated petrol engine developed for compact passenger vehicles (2008–2011). It combines SOHC valvetrain architecture with sequential multi-point fuel injection to deliver balanced performance and fuel economy. Designed to meet Euro 4 standards, it prioritizes reliability and low-cost maintenance in urban driving conditions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,596 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 79.0 mm × 81.4 mm | |
| Power output | 77 kW (105 PS) @ 6,000 rpm | |
| Torque | 145 Nm @ 4,000 rpm | |
| Fuel system | Sequential multi-point fuel injection (SFI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Rubber timing belt (interval: 120,000 km or 6 years) | |
| Oil type | Ford WSS-M2C205-B (SAE 10W-30) | |
| Dry weight | 112 kg |
The naturally aspirated design provides linear throttle response ideal for city driving but requires strict adherence to 120,000 km or 6-year timing belt replacement intervals to prevent engine damage. Ford WSS-M2C205-B (10W-30) oil is essential for maintaining hydraulic lifter function and camshaft lubrication. Coolant must meet Ford WSS-M97B44-D specification to avoid degradation of the plastic timing belt tensioner. The 8-valve SOHC design is inherently robust but sensitive to poor combustion from aged spark plugs or contaminated fuel. Pre-2010 units should have the updated tensioner installed per Ford SIB 08B12; failure to do so increases risk of belt derailment. Emissions control relies on precise lambda feedback, so failed oxygen sensors can trigger limp mode.
Oil Specs: Requires Ford WSS-M2C205-B (10W-30) specification (Ford SIB 08B12). Compatible with ACEA A1/B1 standards.
Emissions: Euro 4 certification applies to all 2008–2011 production models (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under ISO 1585 standards. Output consistent across all markets (Ford PT-2008).
Ford Technical Information System (TIS): Docs D18350, D19224, SIB 08B12
VCA Type Approval Database (VCA/EMS/6789)
ISO 1585: Road vehicles — Test method for the measurement of fuel consumption
The Ford JJA was used across Ford's B2 platform with transverse mounting and front-wheel drive layout. This engine received platform-specific adaptations-shorter accessory belts in the Ka and revised intake manifolds in the Fiesta Mk6-and from 2010 minor revisions improved tensioner durability, creating partial interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the left-side engine block near the transmission bellhousing (Ford TIS D18350). The 8th VIN digit indicates engine type ('A' for JJA series). Pre-2010 models have a black plastic cam cover with silver lettering; post-2010 units use updated tensioner hardware. Critical differentiation from Sigma/Zetec-SE: JJA has an 8-valve head with single camshaft, while Zetec-SE is a 16-valve DOHC design. Service parts require production date verification - timing belt kits for engines before 03/2010 are incompatible with later units due to tensioner redesign (Ford SIB 08B12).
The JJA's primary reliability risk is timing belt failure on pre-2010 builds, with elevated incidence in vehicles with extended service intervals. Internal Ford quality reports from 2011 indicated a significant number of pre-facelift units required belt replacement before 100,000 km, while UK DVSA records show timing-related failures as a leading cause of engine seizure in city-driven examples. Coolant contamination and infrequent oil changes accelerate tensioner wear, making adherence to maintenance schedules critical.
Analysis derived from Ford technical bulletins (2008-2011) and UK DVSA failure statistics (2010-2014). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD JJA.
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FORD 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)
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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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VCA Certification Portal
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