Engine & identification
Vehicle identification
| No. of cylinders Type | 4/DOHC |
|---|---|
| Capacity (Fiscal) cc | 1794 |
| Compression ratio :1 | 10 |
| Suitable for unleaded petrol | Yes |
| Minimum octane rating RON | 91 |
| Ignition system Make | Toyota |
| Ignition system Type | TCCS |
| Ignition system Description | Map-DI |
| Trigger location | Cam/Crankshaft |
| Fuel system Make | Toyota |
| Fuel system Type | TCCS |
| Fuel system Description | MFI-s |
| Air metering Type | Mass |
| Combined ignition and fuel ECM | Yes |
| Diagnostic socket | Yes |
Ignition system
| Ignition coil supply voltage + with ballast V | 12 |
|---|
Firing order
The firing order for the Toyota Celica 1.8 (1999–2006) is 1-3-4-2.
| Firing order | 1-3-4-2 |
|---|
Valve clearances
Valve clearances for the Toyota Celica 1.8 (1999–2006) are 0,15-0,25 mm inlet and 0,22-0,35 mm exhaust, measured cold.
| Valve clearance - INLET mm | 0,15-0,25 cold |
|---|---|
| Valve clearance - EXHAUST mm | 0,22-0,35 cold |
Engine oil & fluids
Engine oil
The Toyota Celica 1.8 (1999–2006) takes 3.7 litres of engine oil with the filter.
A listed engine oil option is SAE 5W-30 for cold climates, with API/ACEA classification SJ/A1.
A listed engine oil option is SAE 5W-30 for moderate climates, with API/ACEA classification SJ/A1.
A listed engine oil option is SAE 15W-40 as an alternative for moderate climates, with API/ACEA classification SJ/A1.
A listed engine oil option is SAE 10W-30 for hot climates, with API/ACEA classification SJ/A1.
Manual gearbox
The manual gearbox has a listed capacity of 2.3 litres. The specified oil is SAE 75W-90, with classification GL-4/5.
Coolant
The listed total cooling-system capacity is 5.7 litres.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | Cold climate |
| Engine oil grade SAE | 5W-30 |
| Engine oil classification API/ACEA | SJ/A1 |
| Ambient temperature range | Moderate climate |
| Engine oil grade SAE | 5W-30 |
| Engine oil classification API/ACEA | SJ/A1 |
| Ambient temperature range | Moderate climate alternative |
| Engine oil grade SAE | 15W-40 |
| Engine oil classification API/ACEA | SJ/A1 |
| Ambient temperature range | Hot climate |
| Engine oil grade SAE | 10W-30 |
| Engine oil classification API/ACEA | SJ/A1 |
| Engine with filter(s) litres | 3.7 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | 75W-90 |
| Manual transmission oil classification | GL-4/5 |
| Manual transmission litres | 2.3 |
| Cooling system - total capacity litres | 5.7 |
| Brake fluid Type | DOT 3 |
| Power steering fluid Type | Dexron II |
| Power steering fluid litres | 0.9 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Toyota Celica 1.8 (1999–2006) are replaced at a minimum thickness of 23 mm (ventilated) front and 7,5 mm rear.
| Minimum disc thickness for replacement - ventilated Front | 23 mm |
|---|---|
| Minimum disc thickness for replacement Rear | 7,5 mm |
Brake disc and drum dimensions
| Disc runout Front | 0,05 mm |
|---|---|
| Disc runout Rear | 0,15 mm |
| Minimum pad thickness Front | 1 mm |
| Minimum pad thickness Rear | 1 mm |
| Parking brake travel No. of notches | 5-8 |
Service & electrical
Battery
The Toyota Celica 1.8 (1999–2006) uses a 12 V, 48 Ah battery.
| Battery V/RC(Ah) | 12 (48) |
|---|
Spark plugs
The Toyota Celica 1.8 (1999–2006) uses Denso K16RU11 spark plugs with a 1,1 mm electrode gap.
| Spark plugs Original equipment | Denso |
|---|---|
| Spark plug Type | K16RU11 |
| Electrode gap mm | 1,1 |
| Spark plugs Make | NGK |
| Spark plug Type | BKR5EYA11 |
| Electrode gap mm | 1,1 |
Tuning and emissions
| Tuning conditions | — |
|---|---|
| View more information | — |
| Ignition timing, idle speed | |
| Ignition timing - basic BTDC °Engine/rpm | 14±4/700 Not adjustable |
| Ignition advance checks °Engine/rpm | ECM Controlled |
| Idle speed rpm | 700±50 Not adjustable |
| Oil temperature °C | 80 |
| CO level at idle speed - tailpipe Vol. % CO | 0,5 Max Not adjustable |
| HC level at idle speed ppm | 100 |
| CO2 level at idle speed Vol. % CO2 | 14,5-16 |
| O2 level at idle speed Vol. % O2 | 0,1-0,5 |
| Increased idle speed for CO test rpm | 2400-2600 |
| CO content at increased idle speed Vol. % | 0,3 |
| Lambda at increased idle λ | 0,98-1,02 |
Starting and charging
| Maximum cranking amps A | 130-158 |
|---|---|
| Alternator output A/V/rpm | 80/14/6000 |
Service checks and adjustments
| Compression pressure bar | 10,0-15,0 |
|---|---|
| Oil pressure bar/rpm | 2,9-5,4/3000 |
| Radiator cap bar | 0,93-1,23 |
| Thermostat opens °C | 80-84 |
Fuel system
| Regulated pressure with vacuum bar | 3,0-3,5 |
|---|---|
| Engine coolant temperature (ECT) sensor Ohm/°C | 200-400/80 |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm | 1630-2740 |
| Injector Ohm | 13,4-14,2 |
| Injector opening duration (hot) ms/rpm | 1,1-2,1 |
| Lambda sensor (Oxygen) heater Ohm | 11,0-16,0 |
Tightening torques
Cylinder head bolt torque
The cylinder head bolts on the Toyota Celica 1.8 (1999–2006) are tightened in 3 stages: 25 Nm, then 49 Nm, then a final 90°.
| Cylinder head | |
|---|---|
| Tighten | 25 Nm |
| Tighten | 49 Nm |
| Tighten | 90° |
| Cylinder head instructions | — |
|---|---|
| Cylinder head | |
| View more information | — |
| Other engine tightening torques | |
| Main bearings Renew bolts/nuts | — |
| View more information | — |
| Main bearings | |
| Big end bearings Renew bolts/nuts | — |
| View more information | — |
| Big end bearings | |
| Big end bearings Stage 1 | 20 Nm |
| Big end bearings Stage 2 | 90° |
| Oil pump to cylinder block | 9 Nm |
| Sump bolts | 9 Nm |
| Sump drain bolt | 37 Nm |
| Flywheel/driveplate | 49 Nm+90° |
| Clutch pressure plate | 19 Nm |
| Crankshaft pulley/damper centre bolt | 138 Nm |
| Camshaft sprocket/gear | 45 Nm |
| Camshaft carrier/cap | — |
| Camshaft carrier/cap | |
| Camshaft/rocker cover | 10 Nm |
| Inlet manifold to cylinder head | 19 Nm |
| Exhaust manifold to cylinder head | 37 Nm |
| Exhaust downpipe to manifold | 43 Nm |
| Spark plugs | 18 Nm |
| Fuel rail | 19 Nm |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor | 9 Nm |
| Camshaft position (CMP) sensor | 9 Nm |
| Lambda sensor (Oxygen) | 44 Nm |
| Knock sensor (KS) | 39 Nm |
| Engine oil pressure switch | 13 Nm |
| Engine upper cover | 7 Nm |
| Chassis tightening torques | |
| Front hub | 216 Nm |
| Steering wheel | 34 Nm |
| Steering rack/box mounting | 45 Nm |
| Steering track rod end | 49 Nm |
| Brake caliper to carrier Front | 34 Nm |
| Brake caliper/carrier to hub Front | 107 Nm |
| Brake caliper/carrier to hub Rear | 47 Nm |
| ABS sensor Front | 8 Nm |
| Road wheels | 103 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 | 430±30 |
| Air conditioning oil group | PAG |
| Air conditioning oil Type | Dens Oil 8 |
| Air conditioning oil quantity cm³ | 120 |
| Air conditioning oil viscosity ISO | 46 |
Frequently asked questions
What is the firing order of the Toyota Celica 1.8?
The firing order for the Toyota Celica 1.8 (1999–2006) is 1-3-4-2.
What spark plugs does the Toyota Celica 1.8 use?
The Toyota Celica 1.8 (1999–2006) uses Denso K16RU11 spark plugs with a 1,1 mm electrode gap.
How much oil does the Toyota Celica 1.8 take?
The Toyota Celica 1.8 (1999–2006) takes 3.7 litres of engine oil with the filter. A listed engine oil option is SAE 5W-30 for cold climates, with API/ACEA classification SJ/A1. A listed engine oil option is SAE 5W-30 for moderate climates, with API/ACEA classification SJ/A1. A listed engine oil option is SAE 15W-40 as an alternative for moderate climates, with API/ACEA classification SJ/A1. A listed engine oil option is SAE 10W-30 for hot climates, with API/ACEA classification SJ/A1.
What are the valve clearances for the Toyota Celica 1.8?
Valve clearances for the Toyota Celica 1.8 (1999–2006) are 0,15-0,25 mm inlet and 0,22-0,35 mm exhaust, measured cold.
What is the cylinder head torque for the Toyota Celica 1.8?
The cylinder head bolts on the Toyota Celica 1.8 (1999–2006) are tightened in 3 stages: 25 Nm, then 49 Nm, then a final 90°.
What is the minimum brake disc thickness for the Toyota Celica 1.8?
Brake discs on the Toyota Celica 1.8 (1999–2006) are replaced at a minimum thickness of 23 mm (ventilated) front and 7,5 mm rear.