The Ford LAC is a 1,597 cc, inline-four, naturally aspirated petrol engine produced between 1995 and 2002. It belongs to the Ford Zetec engine family, featuring dual overhead camshafts (DOHC) and multi-point fuel injection (MPFI). Designed for compact and family vehicles, it delivers 74 kW (100 PS) with 140 Nm of torque, offering responsive performance and improved high-RPM efficiency compared to SOHC variants.
Fitted to models such as the Ford Escort Mk6 (Erika), Ford Fiesta Mk3 (B3), and Ford Puma (Mk1), the LAC was engineered for balanced urban and highway performance. Its DOHC 16-valve architecture supports higher revving capability and better breathing, enhancing drivability in mid-size applications. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, meeting Euro 2 standards across its production run.
One documented concern is inlet manifold runner failure due to plastic fatigue, highlighted in Ford Service Action 98E/033. This issue typically arises from thermal cycling and prolonged exposure to underhood heat, leading to vacuum leaks and idle instability. Later production revisions included redesigned runner flaps with reinforced polymer materials to improve durability.
All production years 1995–2002 meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/5679).
The Ford LAC is a 1,597 cc inline-four, naturally aspirated petrol engine developed for Ford's B3/Erika platform vehicles (1995–2002). It features a DOHC 16-valve valvetrain and sequential MPFI to deliver refined performance and improved volumetric efficiency. Designed to meet Euro 2 standards, it balances responsiveness with durability in everyday driving conditions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,597 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.3 mm × 75.0 mm | |
| Power output | 74 kW (100 PS) @ 6,000 rpm | |
| Torque | 140 Nm @ 4,250 rpm | |
| Fuel system | Sequential multi-point fuel injection (S-MPFI) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (renew every 120,000 km or 6 years) | |
| Oil type | SAE 10W-40, API SL/CF | |
| Dry weight | 118 kg |
The DOHC 16-valve design enables higher revving and better breathing, delivering improved throttle response and mid-range pull ideal for spirited driving. Adherence to the 120,000 km timing belt replacement interval is critical, as the LAC is an interference engine—failure risks valve-to-piston contact. SAE 10W-40 oil meeting API SL/CF is essential for camshaft and follower lubrication under thermal stress. Use of unleaded petrol (EN 228) prevents catalyst degradation. Regular inspection of the variable inlet manifold runners is advised to detect cracking; post-1999 units feature reinforced flaps improving long-term reliability. Cooling system maintenance—including thermostat and radiator inspection—is vital to prevent overheating-related valve train wear.
Oil Specs: Requires SAE 10W-40 meeting API SL/CF (Ford SIB 98E/033). ACEA A2/B2 equivalent acceptable.
Emissions: Euro 2 certification applies to all models (1995–2002) (VCA Type Approval #VCA/EMS/5679).
Power Ratings: Measured under ECE R85. Output consistent across markets with 95 RON fuel.
Ford Technical Information System (TIS): Docs B13571, B14202, SIB 98E/033
VCA Type Approval Database (VCA/EMS/5679)
European Commission Regulation (EC) No 83/2007 (amending emission standards)
The Ford LAC was used across Ford's B3/Erika platforms with transverse mounting and front-wheel drive layout. This engine received platform-specific adaptations-revised intake manifolds in the Puma and modified exhaust headers in the Escort Saloon-and from 1999, the facelifted Mk3 Fiesta adopted updated engine management calibration, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-hand side of the cylinder block, just below the exhaust manifold (Ford TIS B13571). The 8th VIN digit indicates engine type ('A' for LAC series). Pre-1999 models have a silver cam cover with "Zetec" branding; post-1999 units use updated emissions labelling. Critical differentiation from L1L units: LAC uses a DOHC 16-valve head with individual coil packs, while L1L has SOHC 8-valve with distributor ignition. Service parts require model-year verification—timing belts for pre-1999 engines are not compatible with later variants due to pulley redesign (Ford SIB 99F/011).
The LAC's primary reliability risk is inlet manifold runner failure under thermal stress, with elevated incidence in vehicles subjected to frequent hot/cold cycles. Internal Ford quality reports from 1999 indicated a measurable increase in vacuum-related idle faults in units operating in temperate climates with seasonal temperature swings, while UK DVSA data shows intake-related failures were a leading cause of pre-2000 petrol engine MOT advisories. Infrequent timing belt replacement and extended oil change intervals increase mechanical risk, making scheduled maintenance critical.
Analysis derived from Ford technical bulletins (1995-2002) and UK DVSA failure statistics (1995-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD LAC.
Comprehensive technical documentation and regulatory references
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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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