QG18DE engine — Nissan 1.8 (1.8L)
1.8L · 114-116 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | QG18DE |
| Capacity | 1769 cc |
| Idle speed | 700 ± 50 rpm |
| Automatic | 800 ± 50 rpm |
| Inlet | 0.32 - 0.40 mm |
| Exhaust | 0.37 - 0.45 mm |
| Inlet | 0.25 - 0.33 mm |
| Exhaust | 0.32 - 0.40 mm |
| Normal | 13.24 bar |
| Minimum | 11.28 bar |
| Oil pressure | >0.69 / 600 >2.84 / 2000 >4.22 / 6000 bar/rpm |
| Oil pressure | >0.98 / 600 >2.94 / 2000 >3.92 / 6000 bar/rpm |
Engine (petrol)
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Timing stroboscopic (before TDC) | 8 ± 2 / 650 - 750 °/rpm |
| Timing stroboscopic (before TDC) | 10 ± 2 / 650 - 750 °/rpm |
| Spark plugs (make and type) | NGK BKR5E-11 Champion RC10YCC4 |
| Spark plugs (make and type) | NGK BKR4E-11 Champion RC12YCC4 |
| Spark plugs (make and type) | NGK BKR6E-11 Champion RC7YCC4 |
| Spark plug gap | 1.0 - 1.1 mm |
| Injection pressure/system pressure | 2.35 bar |
| Injection pressure/system pressure | 2.94 bar |
| CO exhaust gas | < 0.5 / 450 - 1000 %/rpm |
| Fast-idle speed | 2500 - 3000 rpm |
| CO at fast-idle speed | < 0.3 % |
| HC | < 200 ppm |
| Lambda | 0.97 - 1.03 |
| Oil temperature during test | > 80 °C |
| CO exhaust gas | < 0.5 % |
Cooling system
| Cap pressure | 0.80 - 1.00 bar |
| Thermostat opens at | 82 °C |
Electrical
| Battery | 48 / 52 Ah |
| Alternator | 80 A |
Capacities
| Engine sump, incl. filter | 2.7 l |
| Gearbox refill | 3.0 l |
| Gearbox refill | 7.0 l |
| Cooling system | 6.7 l |
| Air-conditioner refrigerant | 500 ± 50 g |
| Air-conditioner refrigerant | 450 - 550 g |
| Air-conditioner compressor oil | 200 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 29 Nm |
| Cylinder head bolts — Stage 2 | 59 Nm |
| Cylinder head bolts — Stage 4 | 29 Nm |
| Cylinder head bolts — Stage 5 | 50 - 55 ° |
| Cylinder head bolts — Stage 6 | 6 - 8 Nm |
| Front hub | 197 - 274 Nm |
| Front hub | 226 - 313 Nm |
| Rear hub | 187 - 255 Nm |
| Wheel nuts | 98 - 118 Nm |
| Spark plugs | 20 - 29 Nm |
Emissions
| Emission code | 70/220*1999/102 |
| Emission standard | Euro 3 (05/2000 ->) |
| CO2 average | 183 g/km |
| CO | 0.667 g/km |
| HC | 0.055 g/km |
| NOx | 0.054 g/km |
| Emission code | 70/220*1999/102A |
| Emission standard | Euro 3 (09/2000 ->) |
| CO | 0.589 - 0.667 g/km |
| HC | 0.024 - 0.055 g/km |
| NOx | 0.020 - 0.054 g/km |
| Emission code | 70/220*2001/1B |
| Emission standard | Euro 4 (01/2002 ->) |
| CO | 0.316 g/km |
| HC | 0.031 g/km |
| NOx | 0.016 g/km |
| Emission standard | Euro 3 |
| CO2 average | 188 g/km |
| CO | 0.490 g/km |
| HC | 0.068 g/km |
| NOx | 0.067 g/km |
| CO | 0.490 - 0.512 g/km |
| HC | 0.027 - 0.068 g/km |
| NOx | 0.031 - 0.067 g/km |
| Emission code | 70/220*2001/1A |
| CO | 0.512 g/km |
| HC | 0.027 g/km |
| NOx | 0.031 g/km |
| Emission code | 70/220*1998/69 |
| Emission standard | Euro 2 (05/2000 ->) |
| CO2 average | 180 g/km |
| Emission code | 70/220*1998/69A |
| Emission standard | Euro 3 (01/2000 ->) |
| CO | 0.411 - 0.667 g/km |
| HC | 0.045 - 0.055 g/km |
| NOx | 0.022 - 0.054 g/km |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
Got a QG18DE problem? Ask for free.
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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.
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The story behind TorqFix → · How these pages are made →Workshop data on this page last updated 22 Aug 2026.