The Renault F3N 716 is a 1,721 cc, inline‑four naturally aspirated diesel engine produced between 1987 and 1992. It features a robust indirect injection system and a cast‑iron block, delivering 43 kW (58 PS) and 105 Nm of torque. Its simple, non‑turbocharged design prioritised durability and ease of maintenance for compact passenger vehicles.
Fitted primarily to the Renault 9 (B/C53) and 11 (B/C53), the F3N 716 was engineered for economical, reliable transportation with an emphasis on low running costs. Emissions compliance for its production era was managed through basic mechanical injection and combustion chamber design, meeting pre‑Euro standards applicable at the time.
A documented characteristic is the tendency for the cylinder head to develop cracks between valve seats under sustained high-load conditions, as noted in Renault Technical Note 7711‑110‑78901. This is attributed to thermal stress in the head's casting design. The engine received no major revisions during its production run.
Production years 1987–1992 pre-date formal Euro standards (VCA UK Type Approval not applicable for pre-1992 vehicles).
The Renault F3N 716 is a 1,721 cc inline‑four naturally aspirated diesel engine engineered for compact sedans and hatchbacks (1987-1992). It combines a cast‑iron block with indirect injection to deliver adequate low‑speed torque for urban and highway driving. Designed for pre‑Euro emissions norms, it prioritises mechanical simplicity and serviceability over high performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,721 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, OHV, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 78.0 mm × 90.0 mm | |
| Power output | 43 kW (58 PS) @ 4,500 rpm | |
| Torque | 105 Nm @ 2,500 rpm | |
| Fuel system | Indirect injection (Bosch mechanical pump) | |
| Emissions standard | Pre-Euro (No formal standard) | |
| Compression ratio | 22.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain (non‑interference design) | |
| Oil type | Renault RN0700 or ACEA A3/B3 (SAE 15W‑40) | |
| Dry weight | Not available in OEM documentation |
The high compression ratio ensures good cold-start performance but demands a robust starter system. Regular oil changes (every 10,000 km) with mineral 15W-40 are sufficient. The non-interference timing chain is exceptionally durable. The primary reliability concern is potential cracking of the cylinder head between valve seats under sustained load; inspection and replacement with a new head is the recommended fix per Technical Note 7711-110-78901. The engine runs best on standard diesel fuel.
Oil Specs: Requires Renault RN0700 or equivalent ACEA A3/B3 specification (Renault Owner's Manual).
Emissions: Pre-dates formal Euro standards (VCA Historical Data).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across model applications (Renault Group PT‑1989).
Renault Technical Information System: Repair Manual 7711-110-78901, Technical Note 7711-110-78901
UK Vehicle Certification Agency Historical Data Archive
EEC Directive 80/1269/EEC Engine Power Certification
The Renault F3N 716 was used across Renault's B/C53 platform with transverse mounting. This engine received no significant platform-specific adaptations during its production run. All applications share identical core components. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front face of the cylinder block, near the gearbox flange (Renault Repair Manual 7711-110-78901). The 8th VIN digit for F3N-equipped vehicles is typically 'F'. Visually, it is identifiable by its cast-iron block, mechanical injection pump on the side, and lack of a turbocharger. The F3N 716 is distinct from the smaller F2N by its larger 1.7L displacement and different cylinder head casting. Service parts are generally interchangeable across all F3N 716 applications.
The F3N 716's primary documented issue is potential cylinder head cracking, affecting a notable number of units subjected to sustained high loads or overheating. Renault service data indicates this is the most serious mechanical failure mode for these engines, while its simple design otherwise contributes to excellent overall longevity. Neglecting cooling system maintenance can significantly increase the risk of head failure.
Analysis derived from Renault technical bulletins (1987-1992) and UK DVSA failure statistics (1992-2002). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F3N-716.
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RENAULT Official Site
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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.
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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VCA Certification Portal
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