FUJB engine — DY 1.2 (1.2L)
1.2L · 69-75 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | FUJB |
| Capacity | 1242 cc |
| Idle speed | 750 rpm |
| Inlet | 0.17 - 0.23 mm |
| Exhaust | 0.27 - 0.33 mm |
| Oil pressure | 1.0 / 800 2.5 / 2000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | SFI |
| Number of cylinders | 4 |
| Firing order | 1 - 3 - 4 - 2 |
| Spark plugs (make and type) | Motorcraft AYFF 22C |
| Spark plug gap | 1.3 mm |
| Injection pressure/system pressure | 3.7 bar |
Cooling system
| Cap pressure | 1.2 - 1.4 bar |
| Thermostat opens at | 88 °C |
Capacities
| Engine sump, incl. filter | 3.8 l |
| Manual transmission | iB5 |
| Gearbox refill | 2.3 l |
| Cooling system | 5.0 l |
| Air-conditioner refrigerant | 650 ± 13 g |
| Air-conditioner compressor oil | 207 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 15 Nm |
| Cylinder head bolts — Stage 2 | 30 Nm |
| Cylinder head bolts — Stage 3 | 90 ° |
| Front hub | 290 Nm |
| Wheel bearing unit to hub | 70 Nm |
| Wheel nuts | 85 Nm |
| Spark plugs | 15 Nm |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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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.
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.
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 →Workshop data on this page last updated 22 Aug 2026.