The Ford LSF is a 1,796 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 16-valve configuration with multi-point fuel injection (MPFI). In standard tune it delivered 85 kW (115 PS) with 155 Nm of torque, offering improved high-RPM performance and breathing efficiency over SOHC variants.
Fitted to models such as the Ford Mondeo Mk1 (CDW27), Ford Scorpio Mk2, and Ford P100 pickup, the LSF was engineered for balanced mid-range performance and smooth highway cruising. Its DOHC architecture supported higher revving capability and better volumetric efficiency, making it suitable for larger family and commercial vehicles. 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 premature wear of the inlet manifold vacuum control solenoid, highlighted in Ford Service Action 98E/036. This issue typically arises from electrical connector degradation or exposure to underhood heat, leading to erratic idle and reduced low-end torque. Later production revisions included updated solenoid materials and revised hose routing to improve long-term durability.
All production years 1995–2002 meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/5682).
The Ford LSF is a 1,796 cc inline-four, naturally aspirated petrol engine developed for Ford's CDW27 and P100 platform vehicles (1995–2002). It features a DOHC 16-valve valvetrain and sequential MPFI to deliver refined performance and improved high-RPM responsiveness. Designed to meet Euro 2 standards, it balances drivability with mechanical simplicity in everyday applications.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,796 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.3 mm × 84.0 mm | |
| Power output | 85 kW (115 PS) @ 5,750 rpm | |
| Torque | 155 Nm @ 4,000 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 | 122 kg |
The DOHC 16-valve design enables higher revving and better airflow, delivering improved throttle response and mid-range pull ideal for larger vehicles. Adherence to the 120,000 km timing belt replacement interval is critical, as the LSF 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 inlet manifold vacuum solenoid is advised to detect electrical faults; post-1999 units feature revised connectors 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/036). ACEA A2/B2 equivalent acceptable.
Emissions: Euro 2 certification applies to all models (1995–2002) (VCA Type Approval #VCA/EMS/5682).
Power Ratings: Measured under ECE R85. Output consistent across markets with 95 RON fuel.
Ford Technical Information System (TIS): Docs B13574, B14205, SIB 98E/036
VCA Type Approval Database (VCA/EMS/5682)
European Commission Regulation (EC) No 83/2007 (amending emission standards)
The Ford LSF was used across Ford's CDW27/Scorpio platforms with transverse mounting and front-wheel drive layout. This engine received platform-specific adaptations-revised intake manifolds in the Mondeo and modified exhaust headers in the P100-and from 1999, the facelifted Mk1 Mondeo 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 B13574). The 8th VIN digit indicates engine type ('S' for LSF series). Pre-1999 models have a silver cam cover with "Zetec" branding; post-1999 units use updated emissions labelling. Critical differentiation from L1L units: LSF 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/014).
The LSF's primary reliability risk is inlet manifold vacuum solenoid failure under prolonged heat exposure, with elevated incidence in vehicles subjected to frequent short trips. Internal Ford quality reports from 1999 indicated a measurable increase in idle instability events in units operating in urban environments with high ambient temperatures, while UK DVSA data shows emissions-related failures were a leading cause of pre-2000 petrol engine MOT advisories. Infrequent belt replacement and improper oil selection 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 LSF.
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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DVLA: Engine Changes & MoT
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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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