Z16XE1 engine — Opel 1.6 (1.6L)
1.6L · 105 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | Z 16 XE1 |
| Capacity | 1598 cc |
| Idle speed | 710 - 930 rpm |
| Inlet | 0.21 - 0.29 mm |
| Exhaust | 0.26 - 0.34 mm |
| Normal | 12.0 - 14.0 bar |
| Max. compression loss between cylinders | 25 % |
| Oil pressure | 1.3 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | MT 35 E |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Spark plugs (make and type) | Bosch FQR 8 LE2 |
| Spark plug gap | 1.3 - 1.4 mm |
| Fuel pump pressure | 3.0 bar |
Cooling system
| Thermostat opens at | 90 °C |
| Thermostat opens at | 105 °C |
Electrical
| Battery | 55 Ah |
| Battery | 66 Ah |
| Alternator | 120 A |
Capacities
| Engine sump, incl. filter | 4.5 l |
| Manual transmission | F17 / F17 MTA |
| Gearbox refill | 1.6 l |
| Cooling system | 5.9 l |
| Air-conditioner refrigerant | 450 g |
| Air-conditioner compressor oil | 150 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 25 Nm |
| Cylinder head bolts — Stage 2 | 90 ° |
| Cylinder head bolts — Stage 3 | 90 ° |
| Cylinder head bolts — Stage 4 | 90 ° |
| Cylinder head bolts — Stage 5 | 45 ° |
| Cylinder head bolts — Stage 1 | 35 Nm |
| Cylinder head bolts — Stage 2 | 30 ° |
| Cylinder head bolts — Stage 3 | 15 ° |
| Spark plugs | 25 Nm |
| Starter motor | 25 Nm |
| Knock sensor | 20 Nm |
| Oil plug | 15 Nm |
| Oxygen sensor | 40 Nm |
Engine codes in the same family
The same code prefix usually means the same block with a different output, fuel or model year. Procedures are often shared — check the code on the engine plate.
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
Got a Z16XE1 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.
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.