Z7X-775 engine — Renault 3.0 (3L)
3L · 167 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | Z7X-775 |
| Capacity | 2963 cc |
| Idle speed | 750 ± 50 rpm |
| Idle speed | 850 ± 50 rpm |
| Inlet | 0.10 mm |
| Exhaust | 0.25 mm |
| Normal | 12 - 13 bar |
| Oil pressure | 2.2 / 750-850 4.4 / 4000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Bendix Siemens MPI |
| Number of cylinders | 6 |
| Firing order | 1 - 6 - 3 - 5 - 2 - 4 |
| Ignition coil resistance, primary | 0.4 - 0.8 ohms |
| Ignition coil resistance, secondary | 2000 - 12000 ohms |
| Spark plugs (make and type) | Eyquem RFC 58 LS Eyquem RFC 57 LS3 |
| Spark plug gap | 1.2 mm |
| Injection pressure/system pressure | 3.0 ± 0.2 bar |
| CO exhaust gas | < 0.5 % |
| CO at fast-idle speed | < 0.3 % |
| Fast-idle speed | 2600 - 2900 rpm |
| CO2 | > 14.5 % |
| HC | < 100 ppm |
| O2 | 0.1 - 0.5 % |
| Lambda | 0.97 - 1.03 |
Cooling system
| Cap pressure | 0.8 / 1.2 bar |
| Thermostat opens at | 84 - 96 °C |
Electrical
| Battery | 60 Ah |
| Alternator | 105 A |
Capacities
| Engine sump, incl. filter | 6.7 l |
| Automatic transmission | AD8 |
| Gearbox refill | 4.0 l |
| Cooling system | 10.0 l |
| Air-conditioner refrigerant | 820 ± 30 g |
| Air-conditioner compressor oil | 135 ± 15 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 60 Nm |
| Cylinder head bolts — Stage 3 | 40 Nm |
| Cylinder head bolts — Stage 4 | 180 ° |
| Spark plugs | 25 Nm |
| Knock sensor | 40 Nm |
| Front hub | 280 Nm |
| Rear hub | 170 Nm |
| Wheel bolts | 100 Nm |
Emissions
| Emission code | 70/220*1996/69 |
| Emission standard | Euro 2 |
| CO2 average | 325 g/km |
| CO | 0.068 - 0.868 g/km |
| HC NOx | 0.337 g/km |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.