4A-GE engine — Toyota 1.6 (1.6L)
1.6L · 116-125 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | 4A-GE |
| Capacity | 1587 cc |
| Idle speed | 800 ± 50 rpm |
| Inlet | 0.20 - 0.30 mm |
| Exhaust | 0.26 - 0.36 mm |
| Normal | 12.36 bar |
| Minimum | 8.83 bar |
| Oil pressure | 2.5 - 5.0/3000 bar/rpm |
| Inlet | 0.15 - 0.25 mm |
| Exhaust | 0.20 - 0.30 mm |
| Normal | 12.7 bar |
| Minimum | 9.0 bar |
| Oil pressure | 2.5 - 4.9/3000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Toyota TCCS |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Timing stroboscopic (before TDC) | 10/800 °/rpm |
| Ignition coil resistance, primary | 0.4 - 0.5 ohms |
| Ignition coil resistance, secondary | 10200 - 13800 ohms |
| Spark plugs (make and type) | NGK BPR6EY-11 |
| Spark plug gap | 1.1 mm |
| Fuel pump pressure | 2.2 - 2.6 bar |
| Injection pressure/system pressure | 2.3 - 2.6 bar |
| CO exhaust gas | 1.5 ± 0.5 % |
| CO2 | 13 - 16 % |
| HC | 300 ppm |
| O2 | 0.5 - 2.0 % |
| Oil temperature during test | 80 °C |
| Fast-idle speed | 2400 - 2600 rpm |
| CO at fast-idle speed | < 0.3 % |
| Ignition coil resistance, primary | 0.5 - 0.7 ohms |
| Ignition coil resistance, secondary | 11500 - 15500 ohms |
| Spark plugs (make and type) | NGK BCPR6EY-11 |
| Fuel pump pressure | 2.3 - 2.8 bar |
| Injection pressure/system pressure | 2.1 - 2.3 bar |
| CO exhaust gas | 1.0 ± 0.5 % |
| CO2 | 13.0 - 16.0 % |
Cooling system
| Cap pressure | 0.8 - 1.0 bar |
| Thermostat opens at | 80 - 84 °C |
| Fan on at | 90 °C |
| Cap pressure | 0.75 - 1.00 bar |
| Fan on at | 93 °C |
Electrical
| Battery | 50 Ah |
| Alternator | 60 A |
Capacities
| Engine sump, incl. filter | 3.7 l |
| Gearbox refill | 2.6 l |
| Cooling system | 6.0 l |
| Engine sump, incl. filter | 3.3 l |
| Gearbox refill | 2.3 l |
| Cooling system | 12.4 l |
Torque settings
| Cylinder head bolts — Stage 1 | 29 Nm |
| Cylinder head bolts — Stage 2 | +90° ° |
| Cylinder head bolts — Stage 3 | +90° ° |
| Front hub | 186 Nm |
| Rear hub | 122 Nm |
| Wheel nuts | 103 Nm |
| Spark plugs | 18 Nm |
| Cylinder head bolts — Stage 1 | 20 Nm |
| Cylinder head bolts — Stage 2 | 40 Nm |
| Cylinder head bolts — Stage 3 | 55 - 64 ° |
| Front hub | 123 Nm |
| Rear hub | 186 Nm |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
Got a 4A-GE 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.