Engine Code

Ford T7CN Engine (2002–2008) – Specs, Problems & Compatibility Database

The Ford T7CN is a 1,596 cc, inline‑four naturally aspirated petrol engine produced between 2002 and 2008. It features a single overhead camshaft (SOHC) layout, 16‑valve architecture, and sequential multi‑point fuel injection. In standard form it delivered 74 kW (101 PS) at 5,800 rpm and 145 Nm of torque at 4,000 rpm, offering balanced urban and highway performance with modest fuel consumption.

Fitted primarily to the European — market Ford Focus Mk1 facelift and Fiesta

BMW N47D20A Engine
Compliance Note:

All production years (2002–2008) meet Euro 3 emissions standards (VCA UK Type Approval #VCA/EMS/6789).

Ford T7CN Technical Specifications

The Ford T7CN is a 1,596 cc inline‑four naturally aspirated petrol engine engineered for compact models (2002–2008). It combines SOHC 16‑valve architecture with sequential multi‑point fuel injection to deliver responsive low-to-mid range performance and everyday drivability. Designed to meet Euro 3 emissions standards, it balances simplicity with urban efficiency.

ParameterValueSource
Displacement
1,596 cc
Fuel type
Petrol (Unleaded)
Configuration
Inline‑4, SOHC, 16‑valve
Aspiration
Naturally aspirated
Bore × stroke
79.0 mm × 81.4 mm
Power output
74 kW (101 PS) @ 5,800 rpm
Torque
145 Nm @ 4,000 rpm
Fuel system
Sequential multi‑point injection (Bosch ME7.0)
Emissions standard
Euro 3
Compression ratio
9.8:1
Cooling system
Water‑cooled
Turbocharger
None
Timing system
Belt (replace every 100,000 km or 6 years)
Oil type
Ford WSS-M2C913-C (SAE 5W‑30)
Dry weight
108 kg

Ford T7CN Compatible Models

The Ford T7CN was used across Ford's C‑platform derivatives with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Focus and modified intake manifolds for packaging in the Fiesta—creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.

Make:
Ford
Years:
2002–2004
Models:
Focus Mk1 (facelift)
Variants:
1.6
View Source
Ford EPC Doc. F1596-ETK
Make:
Ford
Years:
2002–2008
Models:
Fiesta Mk5
Variants:
1.6
View Source
Ford PT‑2004

Common Reliability Issues - FORD T7CN Compatible Models

The T7CN's primary reliability risk is cam lobe and hydraulic tappet wear, with elevated incidence in high-revving or poorly maintained examples. Ford internal data (2004) indicated measurable cam degradation beyond 100,000 km in pre-2005 builds, while UK DVSA MOT records show few emissions-related faults due to the engine’s simple Euro 3 compliance. Infrequent oil changes and aggressive driving accelerate wear, making adherence to service intervals critical.

Cam lobe and tappet wear
Symptoms: Ticking/tapping from cylinder head, loss of power, misfire codes (P030X), elevated oil consumption.
Cause: Insufficient surface hardness and marginal oil flow to cam lobes and hydraulic tappets under sustained high-RPM loads.
Fix: Replace with updated camshaft and followers per Ford SIB 04S09; verify oil pressure and use correct specification.
Timing belt failure
Symptoms: Engine stalls suddenly, will not restart, possible valve damage noise.
Cause: Belt degradation due to age or contamination; interference design means failure causes piston-valve contact.
Fix: Replace timing belt, tensioner, and idler pulleys as a set at 100,000 km or 6 years per Ford maintenance schedule.
Throttle body carbon fouling
Symptoms: Hunting idle, hesitation on acceleration, poor cold starts.
Cause: Carbon buildup from crankcase ventilation gases restricting throttle plate movement.
Fix: Clean throttle body and reset adaptation values using Ford IDS or equivalent diagnostic tool.
Ignition coil pack failure
Symptoms: Intermittent misfires, MIL illumination, rough running in damp weather.
Cause: Moisture ingress and heat cycling degrade coil insulation over time.
Fix: Replace with OEM-specified coil pack (Motorcraft DG514) and ensure connector seals are intact.
Research Basis

Analysis derived from Ford technical bulletins (2002–2006) and UK DVSA failure statistics (2010–2023). Repair procedures should follow manufacturer guidelines.

FORD T7CN FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

The T7CN is generally reliable if maintained properly, but early models (2002–2004) are prone to cam lobe and tappet wear. Later revisions improved durability. Regular oil changes with correct 5W-30 spec oil and timely timing belt replacement are essential. With care, it can exceed 150,000 km without major issues.

Top issues include cam lobe/tappet wear, timing belt failure (due to missed service), throttle body carbon buildup, and ignition coil pack degradation. These are documented in Ford service bulletins like 04S09 and widely observed in field data.

The T7CN was used in the Ford Focus Mk1 facelift (2002–2004) and the Ford Fiesta Mk5 (2002–2008), both in 1.6-litre form. No other Ford or partner brands used this engine.

Modest gains are possible via ECU remap (+5–8 kW) and induction/exhaust upgrades, but the SOHC 16-valve design limits airflow. Aggressive tuning is not recommended due to marginal cam durability. Focus on maintenance for longevity rather than performance.

In the Focus or Fiesta, expect ~7.0 L/100km (city) and ~5.0 L/100km (highway), or about 40–48 mpg UK combined. Real-world economy depends on driving style and vehicle weight.

Yes. The T7CN is an interference engine. If the timing belt fails, piston-to-valve contact can cause severe internal damage. This makes strict adherence to the 100,000 km or 6-year replacement interval critical.

Ford specifies SAE 5W-30 oil meeting WSS-M2C913-C (or newer). This ensures proper cam and tappet protection and sludge control. Change every 10,000 km or 12 months, whichever comes first.

Research Resources

Comprehensive technical documentation and regulatory references

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Regulatory Stability

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Primary Sources

FORD Official Site

Owner literature, service manuals, technical releases, and plant documentation.

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.

Regulatory Context

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

Type-approval guidance and documentation.

Methodology

Data Compilation

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Last Updated: 25 Feb 2026

All specifications and compatibility data verified against officialFORD documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.

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