The Nissan GA16S is a 1,597 cc, inline‑four naturally aspirated petrol engine produced between 1990 and 1999. It features a cast iron block, aluminum cylinder head, and a single overhead camshaft (SOHC) valvetrain with 16 valves. This engine was designed for fuel efficiency and smooth operation in Nissan's compact global platforms.
Fitted to models such as the Sunny (B13/B14), Sentra (B13/B14), and Pulsar (N14/N15), the GA16S was engineered for reliable daily commuting. It offered a balance of adequate power and excellent fuel economy, making it suitable for cost-conscious drivers worldwide. Emissions compliance for its production period was managed through multi-point fuel injection and basic engine management.
One documented concern is premature failure of the exhaust gas recirculation (EGR) valve, which can cause rough idling and stalling. This issue, noted in Nissan service documentation, is often linked to carbon buildup from frequent short trips or poor fuel quality. In 1995, Nissan revised the EGR system design for improved reliability in certain markets.
Production years 1990–1999 meet applicable Japanese, US, and international emissions standards for their respective model years (Nissan Technical Bulletin NTB-92-008).
The Nissan GA16S is a 1,597 cc inline‑four naturally aspirated petrol engine engineered for compact sedans and hatchbacks (1990-1999). It combines a durable cast iron block with a SOHC 16-valve head and multi-point fuel injection to deliver smooth, economical performance. Designed to meet emissions standards of its era, it prioritizes reliability and low-cost ownership.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,597 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 76.0 mm × 88.0 mm | |
| Power output | 70–77 kW (95–105 PS) | |
| Torque | 134–140 Nm @ 4,000 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Japanese 1990s / US Tier 0 standards | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven camshaft | |
| Oil type | SAE 10W-30 (API SG/CD) | |
| Dry weight | 125 kg |
The 16-valve SOHC design provides smooth power delivery ideal for city and highway driving but requires periodic EGR valve cleaning to prevent idle issues. Using the specified SAE 10W-30 oil is recommended for optimal engine protection. The timing chain is generally durable but should be inspected for noise after 150,000 km. The MPFI system demands clean fuel; using a quality fuel filter and periodic injector cleaning is advised. The 1995 EGR system revision improved reliability; pre-1995 models may benefit from the updated valve.
Oil Specs: Requires SAE 10W-30 meeting API SG/CD specification (Nissan Owner's Manual). Modern API SN/SP equivalents are suitable.
Emissions: Meets Japanese and US emissions standards applicable to 1990-1999 model years (Nissan Technical Bulletin NTB-92-008).
Power Ratings: Measured under JIS D 1001 / SAE J1349 standards. Output varies slightly by model application and market (Nissan Group PT-1995).
Nissan Service Manual (SM-GA16S)
Nissan EPC Documentation (GA16S-001)
Nissan Technical Bulletin (NTB-92-008)
Nissan Owner's Manuals (Sunny B14, Sentra B13)
The Nissan GA16S was used across Nissan's B13/B14 and N14/N15 platforms with transverse mounting. This engine received minor platform-specific adaptations-exhaust manifold routing for the Sentra and ECU mapping for different markets-creating minimal interchange considerations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat boss on the front of the cylinder block, near the crankshaft pulley (Nissan SM-GA16S). The 8th digit of the VIN for North American models is often 'G' for GA-series engines. Visually, it can be identified by its single cam cover and intake manifold with individual fuel injectors. Critical differentiation from the GA16DE: The GA16S uses a SOHC 16-valve head, while the GA16DE has a DOHC 16-valve head; cylinder heads and related components are not interchangeable.
The GA16S's primary reliability risk is EGR valve failure, with elevated incidence in vehicles subjected to frequent short trips. Nissan service data indicates EGR-related driveability complaints are common, while owner reports frequently cite distributor issues. Vehicles used primarily for short urban journeys make EGR system maintenance critical.
Analysis derived from Nissan technical bulletins (1990-1999) and owner workshop manual data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN GA16S.
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