VW AHG — 1.7L Engine
1.7L · 56 hp
Engine overview
Torque figures by job
From the step-by-step procedures for this engine — each figure sits in the step that uses it.
- 55 Nm (41 lb-ft) — Tighten securing nut to
- 20 Nm (15 lb-ft) — Tighten securing nut to
- 45 Nm (33 lb-ft) — Tighten camshaft gear securing bolt to
- 20 Nm (15 lb-ft) — If notch and protrusion are not located opposite each other, retension belt tensioner
- 20 Nm (15 lb-ft) — Attach additional bracket T10108/1 to injection pump flange and tighten bolts (A) to
- 9 Nm (6.6 lb-ft) — Tighten securing bolts -omit special bolt- diagonally to
- 9 Nm (6.6 lb-ft) — Position securing bolts and tighten to
- 27 Nm (20 lb-ft) — Install union for return and tighten to
- 45 Nm (33 lb-ft) — Tighten camshaft gear securing bolt to
- 20 Nm (15 lb-ft) — Attach additional bracket T10108/1 to injection pump flange and tighten bolts to
- 12 Nm (8.9 lb-ft) — Tighten securing bolts to
- 25 Nm (18 lb-ft) — Tighten injection pump securing bolts to
- 9 Nm (6.6 lb-ft) — After achieving specification, tighten quantity adjuster securing bolts to
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | AHG |
| Capacity | 1718 cc |
| Idle speed | 825 - 950 rpm |
| Normal | 34 bar |
| Minimum | 26 bar |
| Differential limit between cylinders | < 5 bar |
| Oil pressure | 2.0 / 2000 bar/rpm |
Engine (diesel)
| System (make and type) | Bosch EDC |
| Injection pump (make and type) | Bosch VE4/10E2100R701 |
| Number of cylinders | 4 |
| Injector firing order | 1 - 3 - 4 - 2 |
| Injector pressure | 190 - 200 bar |
| Minimum | 170 bar |
| Min. no-load governed speed | 4950 rpm |
| Max. no-load governed speed | 5150 rpm |
| Exhaust gas analysis | < 2.51 m-1 |
| Exhaust gas analysis test method/probe (Germany only) | A / 1 |
| Oil temperature during test | 80 °C |
| Idle speed, minimum | 825 rpm |
| Idle speed, maximum | 950 rpm |
| Test time | 0.5 s |
Cooling system
| Cap pressure | 1.4 - 1.6 bar |
| Thermostat opens at | 85 - 105 °C |
| Stage 1/Fan 1 | 92 - 97 °C |
| Stage 2/Fan 2 | 99 - 105 °C |
Electrical
| Battery | 61 Ah |
| Alternator | 70 / 90 A |
Capacities
| Engine sump, incl. filter | 4.7 l |
| Manual transmission | 085 |
| Gearbox refill | 2.7 l |
| Cooling system | 6.5 l |
| Air-conditioner refrigerant | 700 - 750 g |
| Air-conditioner compressor oil | 135 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 40 Nm |
| Cylinder head bolts — Stage 2 | 60 Nm |
| Cylinder head bolts — Stage 3 | 90 ° |
| Cylinder head bolts — Stage 4 | 90 ° |
| Wheel nuts | 110 Nm |
| Injector nozzle | 70 Nm |
| Glow plugs | 15 Nm |
| Flywheel | 60 Nm + 90° Nm |
| Main bearing cap | 65 Nm + 90° Nm |
| Big-end bearing cap | 30 Nm + 90° Nm |
| Crankshaft gearwheel | 90 Nm + 90° 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, carrying 40 torque figures.
- Removing and installing injectors · 11 torque figures
- Removing and installing injection pump · 8 torque figures
- Sealing quantity adjuster · 8 torque figures
- Checking glow plugs · 7 torque figures
- Sealing distributor head · 4 torque figures
- Checking accelerator position sender G79
- Checking timing · 1 torque figures
- Checking and adjusting quantity injected · 1 torque figures
- Checking coolant temperature sender G62
- Checking injection timing control range
- Checking fuel temperature sender G81
- Checking clutch pedal switch F36
- Checking speedometer sender G22
- Renewing engine control unit
- Checking intake air temperature sender G42
- Fitting locations overview
- Checking accelerator position sender G79
- Checking modulating piston movement sender G149
- Checking metering adjuster N146
- Checking throttle valve
- Checking commencement of injection valve N108
- Checking exhaust gas recirculation valve N18 voltage supply
- Checking voltage supply for diesel direct injection system
- Checking engine speed sender G28
- Checking needle lift sender G80
Got a AHG 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.