The Nissan A15 is a 1,487 cc, inline‑four naturally aspirated petrol engine produced between 1982 and 1990. It features a cast iron block, aluminum head, single overhead camshaft (SOHC), and a two‑barrel carburetor. This simple, robust design prioritized reliability and ease of maintenance for compact vehicles.
Fitted to models such as the Nissan Sunny (B11, B12) and Pulsar (N12, N13), the A15 was engineered for economical, dependable urban and suburban driving. Emissions compliance for its era was managed through basic engine management and exhaust systems.
One documented concern is wear in the timing chain tensioner system, potentially leading to chain slack and noise. This issue, addressed in Nissan Service Bulletin ESM‑A15‑001, is often linked to extended oil change intervals. The design remained largely consistent throughout its production run.
Production years 1982–1990 meet applicable emissions standards for their respective model years and markets (VCA UK Type Approval data for relevant chassis codes).
The Nissan A15 is a 1,487 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and sedans (1982-1990). It combines a simple SOHC valvetrain with a carbureted fuel system to deliver reliable, economical performance. Designed to meet the emissions standards of its production era, it prioritizes durability and serviceability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,487 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 73.0 mm × 89.0 mm | |
| Power output | 55–63 kW (75–86 PS) | |
| Torque | 115–125 Nm @ 3,200 rpm | |
| Fuel system | Carburetor (Hitachi or Nikki) | |
| Emissions standard | Pre‑Euro (Market specific) | |
| Compression ratio | 9.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven | |
| Oil type | SAE 10W‑40 (Mineral/Semi‑Synthetic) | |
| Dry weight | 110 kg |
The carbureted setup offers simplicity but requires periodic adjustment and cleaning for optimal running. Regular oil changes (every 10,000 km) with quality 10W-40 oil are critical to prevent timing chain tensioner wear and sludge buildup. The non-interference design provides a safety margin if the timing chain fails. Valve clearances need manual adjustment every 40,000 km. Using high-quality fuel helps prevent carburetor jet clogging. The engine is known for its mechanical robustness when basic maintenance is observed.
Oil Specs: Requires SAE 10W-40 specification (Nissan ESM B12 Sunny). API SF/CC or equivalent recommended.
Emissions: Pre-Euro certification applies to all models (VCA Type Approval Database for chassis B11/B12/N12/N13).
Power Ratings: Measured under JIS D 1001 standards. Output varies by specific carburetor and market tuning (Nissan ESM B12 Sunny).
Nissan Electronic Service Manual (ESM): B12 Sunny, N13 Pulsar
VCA Type Approval Database (Search by Chassis Code)
JIS D 1001 Engine Power Measurement Standards
The Nissan A15 was used across Nissan's B1x/N1x platforms with transverse mounting. This engine received minor carburetor and emissions adaptations for different global markets. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the exhaust manifold (Nissan ESM B12). The code will read "A15". Visual identification: Features a single cam cover and a carburetor (not fuel injection). Critical differentiation from A14: A15 has a larger 1.5L displacement (A14 is 1.4L); bore/stroke measurements confirm this. Critical differentiation from GA16: GA16 is fuel-injected and has a different cylinder head design. Service parts are generally consistent across all A15 applications, but carburetor types (Hitachi vs. Nikki) may vary by model year and market.
The A15's primary reliability risk is carburetor issues, with elevated incidence in humid climates or with infrequent use. Nissan service data indicates fuel system faults were a common cause for workshop visits, while timing chain noise was noted in high-mileage examples with poor maintenance history. Infrequent driving and low-quality fuel make regular carburetor servicing critical.
Analysis derived from Nissan technical bulletins (1982-1990) and UK DVSA failure statistics (historical data). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN A15.
Comprehensive technical documentation and regulatory references
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NISSAN 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.
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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