Engine & identification
Vehicle identification
| No. of cylinders Type | 4/DOHC |
|---|---|
| Capacity cc | 1597 |
| Compression ratio :1 | 16 |
Injection system
| Air metering Type | Mass/MAP |
|---|---|
| Pump type | Common rail |
Injection sequence
The injection sequence for the Honda Civic 1.6 i-DTEC (2018–2020) is 1-3-4-2.
| Injection sequence | 1-3-4-2 |
|---|
Valve clearances
Valve clearances on the Honda Civic 1.6 i-DTEC (2018–2020) 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 Honda Civic 1.6 i-DTEC (2018–2020) takes 4.5 litres of engine oil with the filter.
See the reference table for the complete engine oil entries and their conditions.
Manual gearbox
See the reference table for the complete manual gearbox entries and their conditions.
Coolant
See the reference table for the complete coolant entries and their conditions.
Grades, filling conditions and capacities
| Preferred engine oil | |
|---|---|
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | — |
| Engine oil options | |
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 0W-30 Synthetic |
| Engine oil classification API/ACEA | /C2, C3 |
| Engine with filter(s) litres | 4.5 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | Honda MTF |
| Manual transmission litres | 1.9 |
| Assemble components within 4 minutes. | |
| Manual transmission (dry fill) litres | 2.0 |
| Automatic transmission fluid Type | Honda ATF -TYPE 3 |
| Automatic transmission (drain & refill) litres | 3.3 |
| Do not select other gears or transmission may be damaged. | |
| Automatic transmission (dry fill) litres | 6.7 |
| Coolant Type | Honda all season type 2 |
| Cooling system - total capacity litres | 6.1 |
| Brake fluid Type | DOT 3/4 |
| Clutch fluid Type | DOT 3/4 |
Brakes & wear limits
Brake disc thickness
Rear brake discs on the Honda Civic 1.6 i-DTEC (2018–2020) are replaced at a minimum thickness of 8 mm.
| Minimum disc thickness for replacement - ventilated Front | — |
|---|---|
| Minimum disc thickness | |
| Minimum disc thickness for replacement Rear | 8 mm |
Brake disc and drum dimensions
| Minimum disc thickness | |
|---|---|
| Disc thickness variation Front | 0,015 mm |
| Disc thickness variation Rear | 0,015 mm |
| Disc runout Front | 0,04 mm |
| Disc runout Rear | 0,04 mm |
| Minimum pad thickness Front | 1,6 mm |
| Minimum pad thickness Rear | 2 mm |
Service & electrical
Tuning and emissions
| Idle speed rpm | 760±50 |
|---|
Service checks and adjustments
| Compression pressure bar | 15,0 Min |
|---|---|
| Oil pressure bar/rpm | 3,5/3000 |
| Radiator cap bar | 0,93-1,23 |
| Thermostat opens °C | 86-90 |
Tightening torques
| Cylinder head instructions | — |
|---|---|
| View more information | — |
| Other engine tightening torques | |
| Main bearings Renew bolts/nuts | No |
| Main bearings Stage 1 | 25 Nm |
| Main bearings Stage 2 | 73° |
| Big end bearings Stage 1 | 4 Nm |
| View more information | — |
| Big end bearings Stage 2 | 20 Nm+90° |
| Oil pump to cylinder block | 24 Nm |
| Sump bolts | — |
| View more information | — |
| Assemble components within 4 minutes. Wait 30 minutes before filling engine with oil. Do NOT start engine for 3 hours. | |
| Sump drain bolt | 45 Nm |
| Flywheel/driveplate | 118 Nm/74 Nm |
| Clutch pressure plate | 26 Nm |
| Crankshaft pulley/damper centre bolt | — |
| Camshaft sprocket/gear | 120 Nm |
| Camshaft carrier/cap | — |
| View more information | — |
| Wait 30 minutes before filling engine with oil and do not run engine for 3 hours. | |
| Camshaft/rocker cover | 10 Nm |
| Inlet manifold to cylinder head | 24 Nm |
| Exhaust manifold to cylinder head | 45 Nm |
| Water pump | 12 Nm |
| Injector/clamp | 6 Nm+180° |
| Injector pipe unions | 33 Nm |
| Fuel/injection pump sprocket/gear | 60 Nm |
| Fuel/injection pump mounting | 24 Nm |
| Glow plugs | 14 Nm |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor | 12 Nm |
| Camshaft position (CMP) sensor | 12 Nm |
| Engine coolant temperature (ECT) sensor | 12 Nm |
| Engine oil pressure switch | 18 Nm |
| Oil filter | 12 Nm |
| Chassis tightening torques | |
| Front hub | 245 Nm |
| Rear hub - wheel bearing housing bolts | 98 Nm |
| Steering wheel | 49 Nm |
| Steering track rod end | 54 Nm |
| Brake disc to hub Front | 10 Nm |
| Brake caliper to carrier Front | — |
| Brake caliper to carrier | |
| Brake caliper/carrier to hub Front | 108 Nm |
| Brake disc to hub Rear | 10 Nm |
| Brake caliper to carrier Rear | 25 Nm |
| Brake caliper/carrier to hub Rear | 108 Nm |
| Back plate to hub Rear | 10 Nm |
| ABS sensor Front | 10 Nm |
| ABS sensor Rear | 10 Nm |
| Road wheels | 108 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 | R1234yf |
| Air conditioning refrigerant quantity grams | 400±25 |
| Air conditioning oil group | POE |
| Air conditioning oil Type | RL85HM |
| Air conditioning oil quantity cm³ | 90±13 |
Frequently asked questions
What is the injection sequence of the Honda Civic 1.6 i-DTEC?
The injection sequence for the Honda Civic 1.6 i-DTEC (2018–2020) is 1-3-4-2.
How much oil does the Honda Civic 1.6 i-DTEC take?
The Honda Civic 1.6 i-DTEC (2018–2020) takes 4.5 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 Honda Civic 1.6 i-DTEC?
Valve clearances on the Honda Civic 1.6 i-DTEC (2018–2020) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the minimum brake disc thickness for the Honda Civic 1.6 i-DTEC?
Rear brake discs on the Honda Civic 1.6 i-DTEC (2018–2020) are replaced at a minimum thickness of 8 mm.