The Ford CJBB is a 1,596 cc, inline-four naturally aspirated petrol engine produced between 2010 and 2016. It forms part of the Ford Sigma engine family, featuring dual overhead camshafts (DOHC) and variable cam timing (Ti-VCT) on the intake cam. Delivering 85 kW (115 PS) and 155 Nm of torque, it balances responsiveness with fuel efficiency for compact vehicle applications.
Fitted to models including the Ford Focus Mk3 (2011–2014), Ford C-Max (2010–2015), and Ford EcoSport (2013–2016), the CJBB was engineered for urban and mixed driving with an emphasis on smooth throttle response and low maintenance costs. Emissions compliance was achieved via a three-way catalytic converter and closed-loop lambda control, meeting Euro 5 standards throughout its production run.
One documented concern is premature wear of the timing chain tensioner, which may lead to chain slack and cam timing errors. This issue, referenced in Ford Service Action 13S08, is attributed to early tensioner design sensitivity to oil flow restriction under cold-start conditions. From 2014, revised tensioner components were implemented across the Sigma engine line to improve long-term reliability.
Production years 2010–2016 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Ford CJBB is a 1,596 cc inline-four petrol engine engineered for compact and subcompact models (2010–2016). It combines DOHC architecture with Ti-VCT (intake-side) to deliver responsive low-end torque and smooth operation. Designed to meet Euro 5 standards, it balances everyday drivability with cost-effective ownership.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,596 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 79.0 mm × 81.4 mm | |
| Power output | 85 kW (115 PS) @ 6,300 rpm | |
| Torque | 155 Nm @ 4,250 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 11.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Chain-driven (front-mounted, tensioner-prone) | |
| Oil type | Ford WSS-M2C913-D (5W-30) | |
| Dry weight | 115 kg |
The naturally aspirated design offers predictable throttle response ideal for city driving but requires adherence to 15,000 km oil service intervals to maintain timing chain lubrication. Ford WSS-M2C913-D (5W-30) oil is essential due to its shear stability and anti-wear additives protecting the front-mounted chain system. Extended idling and short trips increase carbon buildup on intake valves, necessitating periodic cleaning. The MPFI system is robust but sensitive to low-quality fuel; use of minimum 95 RON petrol is required to prevent knock and maintain efficiency. Post-2014 models feature upgraded tensioner assemblies; pre-2014 units should be inspected per Ford SIB 13S08. Catalytic converter longevity depends on lambda sensor health and proper warm-up cycles.
Oil Specs: Requires Ford WSS-M2C913-D (5W-30) specification (Ford SIB 13S08). Compatible with ACEA A1/B1 and API SN standards.
Emissions: Euro 5 certification applies to all production years (2010–2016) (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Output varies slightly by model calibration (Ford TIS Doc. S12010).
Ford Technical Information System (TIS): Docs S11745, S11902, S12010, SIB 13S08
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Ford CJBB was used across Ford's C1/B3 platforms with transverse mounting. This engine received platform-specific adaptations-shorter accessory belts in the EcoSport and revised intake manifolds in the Focus-and from 2014 the facelifted Focus Mk3.5 adopted minor ECU recalibrations affecting idle stability, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block, near the exhaust manifold (Ford TIS S11800). The 8th VIN digit indicates engine type ('H' for 1.6L Sigma). Pre-2014 models have silver valve covers with black cam covers; post-2014 units use black valve covers. Critical differentiation from CVH variants: CJBB features a plastic intake manifold with integrated runner control and uses a timing chain, whereas older CVH engines use a belt. Service parts require production date verification—tensioners for engines before 09/2013 are incompatible with later units due to internal redesign (Ford SIB 13S08).
The CJBB's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in short-trip urban use. Internal Ford quality reports from 2014 indicated a measurable share of pre-2014 engines exhibiting chain rattle before 100,000 km, while UK DVSA MOT records show increased emissions-related failures linked to lambda sensor degradation in high-mileage examples. Frequent cold starts and extended oil intervals amplify chain and sensor stress, making oil quality and timely servicing critical.
Analysis derived from Ford technical bulletins (2012-2016) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD CJBB.
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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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.
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