G16A engine — Suzuki 1.6 (1.6L)
1.6L · 80 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | G16A |
| Capacity | 1590 cc |
| Idle speed | 800 ± 50 rpm |
| Inlet | 0.13 - 0.17 mm |
| Exhaust | 0.15 - 0.19 mm |
| Normal | 14 bar |
| Minimum | 12 bar |
| Differential limit between cylinders | < 1 bar |
| Oil pressure | 3.3-4.3 / 4000 bar/rpm |
| Normal | 14.0 bar |
| Minimum | 12.0 bar |
| Differential limit between cylinders | < 1.0 bar |
Engine (petrol)
| Fuel system (make and type) | Aisan |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Timing stroboscopic (before TDC) | 8 ± 1 / 800 °/rpm |
| Ignition coil resistance, primary | 1.30 - 1.58 ohms |
| Ignition coil resistance, secondary | 11200 - 15200 ohms |
| Spark plugs (make and type) | NGK BPR5ES |
| Spark plug gap | 0.7 - 0.8 mm |
| Fuel pump pressure | 0.20 - 0.30 bar |
| CO exhaust gas | 1 - 2 % |
| CO2 | 13 - 16 % |
| HC | 300 ppm |
| O2 | 0.5 - 2.0 % |
| Lambda | 0.97 – 1.03 |
| CO at fast-idle speed | < 0.3 % |
| Fuel system (make and type) | Suzuki SPi |
| Ignition coil resistance, primary | 0.7 - 0.9 ohms |
| Ignition coil resistance, secondary | 13000 - 18000 ohms |
| Spark plugs (make and type) | NGK BPR6ES |
| Injection pressure/system pressure | 1.6 - 2.1 bar |
| CO exhaust gas | < 0.5 % |
| CO2 | 14.5 - 16.0 % |
| HC | 100 ppm |
| O2 | 0.1 - 0.5 % |
| Lambda | 0.97 - 1.03 |
| Lambda change (Delta Lambda) | 0.03 |
| Oil temperature during test | 80 °C |
| Fast-idle speed | 2500-2800 rpm |
| Closed-loop test at: | 500-1200 rpm |
Cooling system
| Cap pressure | 0.9 bar |
| Thermostat opens at | 82 - 88 °C |
| Stage 2/Fan 2 | 88 °C |
Electrical
| Battery | 36 - 50 Ah |
| Alternator | 50 A |
| Battery | 36 Ah |
Capacities
| Engine sump, incl. filter | 4.5 l |
| Gearbox refill | 1.5 l |
| Gearbox refill | 2.5 l |
| Gearbox refill after overhaul | 6.9 l |
| Transfer box | 1.7 l |
| Differential, 4WD front | 1.0 l |
| Differential, 4WD rear | 2.2 l |
| Cooling system | 5.3 l |
Torque settings
| Cylinder head bolts — Stage 1 | 35 Nm |
| Cylinder head bolts — Stage 2 | 55 Nm |
| Cylinder head bolts — Stage 3 | 70 - 75 Nm |
| Inlet manifold | 18 - 28 Nm |
| Exhaust manifold | 18 - 28 Nm |
| Spark plugs | 20 - 30 Nm |
| Wheel nuts | 80 - 110 Nm |
| Front hub | 170 - 250 Nm |
Emissions
| Emission code | 70/220*1996/69 |
| Emission standard | Euro 2 |
| CO2 average | 207 g/km |
| CO | 1.190 g/km |
| HC NOx | 0.190 g/km |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
Got a G16A problem? Ask for free.
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Get free diagnosis →Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
Specifications, service figures and torque values come from manufacturer workshop documentation. The known-faults and tips sections were drafted with AI from public sources and re-checked in October 2026; anything that could not be confirmed was removed. Where the two disagree, the factory figure is the one to use.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix → · How these pages are made →Workshop data on this page last updated 22 Aug 2026.