The Ford F42A is a 1,998 cc, inline — four petrol engine produced between 1986 and 1992. It features a single overhead camshaft (SOHC), 8 — valve configuration, and carburettor or single — point fuel injection depending on market. Designed for durability and ease of maintenance, it delivered 65 kW (88 PS) in standard tune with 140 Nm of torque, supporting reliable urban and highway performance.
Fitted to models such as the Ford Sierra (Mk2), Ford Granada (Mk3), and Ford Scorp…
Production years 1986–1988 meet pre-Euro standards; 1989–1992 models comply with Euro 1 .
The Ford F42A is a 1,998 cc inline-four petrol engine engineered for mid-size sedans and estates (1986–1992). It combines SOHC architecture with carburettor or single-point fuel injection to deliver smooth low-end torque and predictable drivability. Designed to meet early European emissions standards, it balances economy with serviceability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,998 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 84.0 mm × 90.0 mm | |
Power output | 65–68 kW (88–92 PS) | |
Torque | 140–145 Nm @ 2,800 rpm | |
Fuel system | Carburettor or single-point fuel injection | |
Emissions standard | Pre-Euro (1986–1988); Euro 1 (1989–1992) | |
Compression ratio | 9.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Chain-driven camshaft | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 148 kg |
The Ford F42A was used across Ford's Sierra/Granada platforms with longitudinal mounting and shared architecture with Talbot in select European markets. This engine received platform-specific adaptations-shorter intake manifolds in the Scorpio and revised exhaust routing in the Granada-and from 1989 the switch to single-point fuel injection created interchange limits. Partnerships enabled Talbot's 2.0L petrol units to use Ford's block design. All adaptations are documented in OEM technical bulletins.
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The F42A's primary reliability risk is carburettor icing in cold, damp conditions, with elevated incidence in pre-1989 builds. Ford internal service reports from 1989 noted increased cold-start complaints in northern UK regions, while VCA field data links a notable share of pre-Euro MOT failures to EGR clogging in high-mileage units. Short journeys and infrequent servicing increase carbon and condensation buildup, making air intake maintenance and oil quality critical.
Analysis derived from Ford technical bulletins (1986-1992) and UK VCA failure statistics (1990-1995). Repair procedures should follow manufacturer guidelines.
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The F42A is mechanically robust and well-proven in long-term service, particularly in fuel-injected models from 1989 onward. Carburetted variants require attention to icing and choke mechanisms in cold climates. With regular oil changes and cooling system maintenance, many examples exceed 200,000 km. Using correct SAE 10W-40 oil and replacing worn ignition components helps ensure longevity.
Key issues include carburettor icing in early models, EGR valve clogging from carbon deposits, distributor cap moisture tracking, and intake manifold coolant leaks. These are documented in Ford service communications and field reports. Fuel-injected versions resolve most cold-start issues, but EGR and ignition maintenance remains essential for emissions compliance and drivability.
The F42A was primarily used in the Ford Sierra (1986–1992), Ford Granada (1985–1991), and early Ford Scorpio models (1985–1990). It also appeared in the Talbot Tagora (1982–1985) under PSA-Ford collaboration. Most applications were in GL and Ghia trims with manual or automatic transmissions. Carburettor versions were phased out by 1989 in favour of fuel-injected units.
Limited tuning potential exists. Upgrades include performance carburettors, exhaust manifolds, and camshafts, typically yielding +10–15 kW. Conversion to multi-point fuel injection is complex but feasible for enthusiasts. Due to the 8-valve SOHC design, gains are modest. Reliability is best preserved within stock specifications, though ignition and intake improvements can enhance responsiveness.
Moderate by modern standards. In a Sierra 2.0i, consumption averages ~10.5 L/100km (city) and ~7.2 L/100km (highway), or approximately 27 mpg UK combined. Fuel-injected models are slightly more efficient than carburetted variants. Real-world economy depends heavily on driving style and vehicle condition, with well-maintained units achieving up to 30 mpg UK on steady runs.
No. The F42A is a non-interference engine. If the timing chain fails or jumps, the pistons will not contact the valves, preventing catastrophic internal damage. This design enhances durability and reduces repair costs in the event of timing component failure, though chain replacement is still recommended at 150,000 km or if noise is detected.
Ford specifies SAE 10W-40 mineral oil meeting API SG/CD standards. Use of correct viscosity ensures proper lubrication of the camshaft and lifters, particularly in high-mileage engines. Change intervals should not exceed 15,000 km or annually to prevent sludge buildup and maintain valve train health, especially in stop-start driving conditions.
Comprehensive technical documentation and regulatory references
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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.
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.
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