Engine & identification
Vehicle identification
| No. of cylinders Type | 4/DOHC |
|---|---|
| Capacity cc | 1956 |
| Compression ratio :1 | 16,5 |
| Fuel system Make | Bosch |
| Fuel system Type | EDC 16 C39 |
Injection system
| Air metering Type | Mass |
|---|---|
| Fuel/injection pump assembly Make | Bosch |
| Pump type | Common rail |
| Fuel main pump delivery pressure bar | 150-1600 |
| Fuel feed/lift pump delivery pressure bar | 4,0-5,0 |
Injection sequence
The injection sequence for the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) is 1-3-4-2.
| Injection sequence | 1-3-4-2 |
|---|
Valve clearances
Valve clearances on the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) are hydraulic — they self-adjust, so no manual clearance figure applies.
| Valve clearance - INLET mm | Hydraulic |
|---|---|
| Valve clearance - EXHAUST mm | Hydraulic |
Engine oil & fluids
Engine oil
The Alfa Romeo 159 2.0 JTDM 16V (2010–2012) takes 4.9 litres of engine oil with the filter.
See the reference table for the complete engine oil entries and their conditions.
Manual gearbox
The manual gearbox has a listed capacity of 2.8 litres. The specified oil is SAE 75W-85 synthetic, with classification GL-4.
Coolant
The listed total cooling-system capacity is 6.1 litres.
See the reference table for the complete coolant entries and their conditions.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 5W-30 Synthetic |
| Engine oil classification OEM | Fiat 9.55535-S1 |
| Engine oil classification API/ACEA | /C2 |
| Engine with filter(s) litres | 4.9 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | 75W-85 Synthetic |
| Manual transmission oil classification | GL-4 |
| Manual transmission litres | 2.8 |
| Coolant Type | ParaFlu up |
| Coolant Colour | Red |
| Cooling system - total capacity litres | 6.1 |
| Brake fluid Type | DOT 4 |
| Power steering fluid Type | Tutela GI/R |
Brakes & wear limits
Brake disc thickness
Brake discs on the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) are replaced at a minimum thickness of 26 mm (ventilated) front and 10 mm rear.
| Minimum disc thickness for replacement - ventilated Front | 26 mm |
|---|---|
| Minimum disc thickness for replacement Rear | 10 mm |
Service & electrical
Tuning and emissions
| Idle speed rpm | 850±20 |
|---|
Starting and charging
| Battery V/RC(Ah) | 12 |
|---|
Service checks and adjustments
| Oil pressure bar/rpm | 4,0-4,5/4000 |
|---|---|
| Radiator cap bar | 0,98 |
| Thermostat opens °C | 86-90 |
Tightening torques
Cylinder head bolt torque
The cylinder head bolts on the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) are tightened in 4 stages: 20 Nm, then 90°, then 90°, then a final 90°.
| Cylinder head | |
|---|---|
| Tighten | 20 Nm |
| Tighten | 65±3 Nm |
| Tighten | 90° |
| Tighten | 90° |
| Tighten | 90° |
| Cylinder head instructions | — |
|---|---|
| Other engine tightening torques | |
| Sump drain bolt | 20±2 Nm |
| Flywheel/driveplate | 160±16 Nm |
| Clutch pressure plate | 26±2 Nm |
| Crankshaft pulley/damper centre bolt | 340±17 Nm |
| Crankshaft pulley/damper bolts | 26±2 Nm |
| Camshaft sprocket/gear | 30±1 Nm+40° |
| Injector/clamp | 26±2 Nm |
| Injector pipe unions | 23±3 Nm |
| Fuel/injection pump sprocket/gear | 50±5 Nm |
| Fuel/injection pump mounting | 26±2 Nm |
| Glow plugs | 8±1 Nm |
| Oil filter | 25 Nm |
| Chassis tightening torques | |
| Front hub | — |
| Front hub - wheel bearing housing bolts | 102±10 Nm |
| Rear hub - wheel bearing housing bolts | 70±7 Nm |
| Steering wheel | 50±5 Nm |
| Steering track rod end | 100±10 Nm |
| Brake disc to hub Front | 7±1 Nm |
| Brake caliper/carrier to hub Front | 160±8 Nm |
| Brake disc to hub Rear | 7±1 Nm |
| Brake caliper to carrier Rear | 35±3 Nm |
| Brake caliper/carrier to hub Rear | 57±3 Nm |
| ABS sensor Front | 9±2 Nm |
| ABS sensor Rear | 9±2 Nm |
| Road wheels | 120±12 Nm |
Air conditioning
| No. of AC service connectors | 2 |
|---|---|
| Air conditioning restrictor type | Expansion valve |
| Compressor clutch/magnetic coupling | Yes |
| Compressor variable displacement solenoid | No |
| Air conditioning refrigerant Type | R134a |
| Air conditioning refrigerant quantity grams | 460 |
| Air conditioning oil group | PAG |
| Air conditioning oil Type | ZXL 100 PG |
| Air conditioning oil quantity cm³ | 130 |
| Air conditioning oil viscosity ISO | 46 |
Frequently asked questions
What is the injection sequence of the Alfa Romeo 159 2.0 JTDM 16V?
The injection sequence for the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) is 1-3-4-2.
How much oil does the Alfa Romeo 159 2.0 JTDM 16V take?
The Alfa Romeo 159 2.0 JTDM 16V (2010–2012) takes 4.9 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.
What are the valve clearances for the Alfa Romeo 159 2.0 JTDM 16V?
Valve clearances on the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the cylinder head torque for the Alfa Romeo 159 2.0 JTDM 16V?
The cylinder head bolts on the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) are tightened in 4 stages: 20 Nm, then 90°, then 90°, then a final 90°.
What is the minimum brake disc thickness for the Alfa Romeo 159 2.0 JTDM 16V?
Brake discs on the Alfa Romeo 159 2.0 JTDM 16V (2010–2012) are replaced at a minimum thickness of 26 mm (ventilated) front and 10 mm rear.