K7M-790 engine — Renault 1.6 (1.6L)
1.6L · 90 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | K7M-790 |
| Capacity | 1598 cc |
| Idle speed | 720 ± 50 rpm |
| Inlet | 0.10 - 0.15 mm |
| Exhaust | 0.25 - 0.30 mm |
| Oil pressure | 1.0 / 720 3.0 / 3000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Siemens Fenix 5 |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Ignition coil resistance, primary | 0.4-0.8 ohms |
| Ignition coil resistance, secondary | 2000-12000 ohms |
| Spark plugs (make and type) | Eyquiem RFC52LS, RC89YC Champion RC10YC, RNF52LZK |
| Spark plug gap | 0.85 - 0.95 mm |
| Fuel pump pressure | 3.0 bar |
| Injection pressure/system pressure | 2.5 ± 0.2 3.0 ± 0.2 bar |
| CO exhaust gas | < 0.5 % |
| CO2 | > 14.5 % |
| HC | < 100 ppm |
| CO at fast-idle speed | < 0.3 % |
| Fast-idle speed | 2500 rpm |
| Lambda | 0.97 - 1.03 |
| Lambda change (Delta Lambda) | 0.03 |
| Oil temperature during test | 80 °C |
| Closed-loop test at: | 500 - 1000 rpm |
Cooling system
| Cap pressure | 1.6 bar |
| Thermostat opens at | 89 - 101 °C |
Electrical
| Alternator | 75/110 A |
Capacities
| Engine sump, incl. filter | 4.0 l |
| Manual transmission | JB1 / JB3 |
| Gearbox refill | 3.4 l |
| Cooling system | 6.0 l |
| Air-conditioner refrigerant | 750 ± 35 g |
| Air-conditioner compressor oil | 135 ± 10 / 220 ± 1010 ml |
| Condenser | 30 ml |
| Evaporator | 30 ml |
| Drier | 15 ml |
| Each hose | 10 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 20 Nm |
| Cylinder head bolts — Stage 2 | 100 ± 6 ° |
| Repeat stages 1 and 2 for bolts: | 3-6, 7-10 |
| Repeat stages 4, 5 and 6 for bolts: | 3-6, 7-10 |
| Spark plugs | 25 - 30 Nm |
| Big-end bearing cap | 43 Nm |
| Flywheel | 50 - 55 Nm |
| Wheel bolts | 90 Nm |
| Front hub | 280 Nm |
| Rear hub | 175 Nm |
Emissions
| Emission code | 70/220*1996/69 |
| Emission standard | Euro 2 |
| CO2 average | 172 g/km |
| CO | 1.333 g/km |
| HC NOx | 0.268 g/km |
| CO2 average | 206 g/km |
| CO | 0.310 g/km |
| HC NOx | 0.103 g/km |
| CO2 average | 210 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.