G13 engine — Suzuki 1.3 (1.3L)
1.3L · 58-101 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | G13A |
| Capacity | 1324 cc |
| Idle speed | 800 ± 50 rpm |
| Inlet | 0.23 - 0.27 mm |
| Exhaust | 0.28 - 0.32 mm |
| Normal | 14 bar |
| Minimum | 11 bar |
| Oil pressure | 3.0 - 4.1/3000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Aisan |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Timing stroboscopic (before TDC) | (05-1986 - ): 4/700 ( - 06-1986): 6/700 °/rpm |
| Start | 0/95 °/mmHg |
| End | 20/238 °/mmHg |
| Start | 0/1000 - 1500 °/rpm |
| End | 20 - 28/4200 °/rpm |
| Ignition coil resistance, primary | 1.06 - 1.43 ohms |
| Ignition coil resistance, secondary | 10800 - 16200 ohms |
| Spark plugs (make and type) | NGK BPR6ES |
| Spark plug gap | 0.7 - 0.8 mm |
| Fuel pump pressure | 0.2 - 0.3 bar |
| CO exhaust gas | 1.5 ± 0.5 % |
| CO2 | 13 - 16 % |
| HC | 300 ppm |
| O2 | 0.5 - 2.0 % |
Cooling system
| Cap pressure | 0.9 bar |
| Thermostat opens at | 82 - 88 °C |
| Fan on at | 89 - 93 °C |
Electrical
| Battery | 35 Ah |
| Alternator | 50 A |
Capacities
| Engine sump, incl. filter | 4.0 l |
| Gearbox refill | 2.3 l |
| Cooling system | 4.7 l |
Torque settings
| Cylinder head bolts — Stage 1 | 20 - 30 Nm |
| Cylinder head bolts — Stage 2 | 40 - 50 Nm |
| Cylinder head bolts — Stage 3 | 63 - 70 Nm |
| Front hub | 150 - 270 Nm |
| Rear hub | 80 - 120 Nm |
| Wheel nuts | 70 Nm |
| Spark plugs | 20 - 30 Nm |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
Got a G13 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.