Honda1986–1990Technical specifications

Accord Aerodeck 2.0: Technical specifications

Workshop data for the 2-litre petrol (engine code A20A4). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (A20A4) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make
Honda
Model
Accord Aerodeck
Years
1986–1990
Fuel
Petrol
Engine code
A20A4

Performance & efficiency

Power
90 kW (122 hp)
Engine size
1,955 cc
Cylinders
4 · OHC
Compression ratio
9.4:1
Fuel system
Honda

Fluids & capacities

Engine oil (with the filter)
3.5 litres
All 133 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type4/OHC
Capacity (Fiscal) cc1955 (1942)
Compression ratio :19,4
Suitable for unleaded petrolYes
Minimum octane rating RON98/95
Ignition system TypeTSZ-i
Ignition system DescriptionTrans-i
Trigger locationDistributor
Fuel system MakeHonda
Fuel system TypePGM-FI
Fuel system DescriptionMFI-s
Air metering TypeMAP
Combined ignition and fuel ECMYes
Diagnostic socketYes

Ignition system

Ignition coil MakeToyoDenso
Ignition coil supply voltage + with ballast V12,0
Primary resistance Ohm1,2-1,5
Secondary resistance Ohm11000-11500
Distributor (ECM) MakeToyo Denso

Firing order

The firing order for the Honda Accord Aerodeck 2.0 (1986–1990) is 1-3-4-2.

Firing order1-3-4-2

Valve clearances

Valve clearances for the Honda Accord Aerodeck 2.0 (1986–1990) are 0,12-0,17 mm inlet and 0,25-0,30 mm exhaust, measured cold.

Valve clearance - INLET mm0,12-0,17 cold
Valve clearance - EXHAUST mm0,25-0,30 cold

Engine oil & fluids

Engine oil

The Honda Accord Aerodeck 2.0 (1986–1990) takes 3.5 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 2.5 litres.

See the reference table for the complete manual gearbox entries and their conditions.

Coolant

The total cooling-system capacity entries are 6.4 litres without a stated condition; 6.9 litres for AT.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range ➞35°C
Engine oil grade SAE 5W-30
Engine oil classification API/ACEA SG/A2
Ambient temperature range -20°C➞35°C
Engine oil grade SAE 10W-30
Engine oil classification API/ACEA SG/A2
Ambient temperature range -20°C➞
Engine oil grade SAE 10W-40
Engine oil classification API/ACEA SG/A2
Ambient temperature range -15°C➞
Engine oil grade SAE 15W-40, 15W-50
Engine oil classification API/ACEA SG/A2
Ambient temperature range -10°C➞
Engine oil grade SAE 20W-40, 20W-50
Engine oil classification API/ACEA SG/A2
Engine with filter(s) litres 3.5
Other lubricants and capacities
Manual transmission oil grade SAE 10W-30, 10W-40
Manual transmission litres 2.5
Automatic transmission fluid Type Dexron II
Automatic transmission (drain & refill) litres 3.0
Cooling system - total capacity litres 6,4 AT=6,9

Brakes & wear limits

Brake disc thickness

Brake discs on the Honda Accord Aerodeck 2.0 (1986–1990) are replaced at a minimum thickness of 17 mm (ventilated) front and 8 mm rear.

Minimum disc thickness for replacement - ventilated Front17 mm
Minimum disc thickness
Minimum disc thickness for replacement Rear8 mm
Maximum drum diameter for replacement Rear201 mm

Brake disc and drum dimensions

Minimum disc thickness
Disc thickness variation Front0,015 mm
Disc thickness variation Rear0,015 mm
Disc runout Front0,10 mm
Disc runout Rear0,15 mm
Minimum pad thickness Front3 mm
Minimum pad thickness Rear1,6 mm
Minimum shoe thickness Rear2 mm
Parking brake travel No. of notches7-11

Service & electrical

Ignition timing

Basic ignition timing for the Honda Accord Aerodeck 2.0 (1986–1990) is 15° BTDC at 750 rpm.

Idle speed
Ignition timingWith vacuum
Ignition timing - basic BTDC °Engine/rpm15/750
Ignition timing - alternative °Engine/rpm95=11±2/750

Battery

The Honda Accord Aerodeck 2.0 (1986–1990) uses a 12 V, 45 Ah battery (reserve capacity 65 minutes).

Battery V/RC(Ah)12/65 (45)

Spark plugs

The Honda Accord Aerodeck 2.0 (1986–1990) uses NGK BPR6EY-11 spark plugs with a 1,1 mm electrode gap.

Spark plugs Original equipmentNGK
Spark plug TypeBPR6EY-11
Electrode gap mm1,1
Spark plugs MakeAutolite
Spark plug Type63
Electrode gap mm1,1
Spark plugs MakeBosch
Spark plug TypeWR7DCX
Electrode gap mm1,1
Spark plugs MakeChampion
Spark plug TypeRN9YCC4
Electrode gap mm1,1
Spark plugs MakeNGK
Spark plug TypeBPR6EY-11
Electrode gap mm1,1

Tuning and emissions

Tuning conditions—
View more information—
Idle speed
Vacuum checkIgnition timing advances
Vacuum range °Engine9
Vacuum ends mbar666
Idle speed rpm750±50
Idle speed - alternative rpmAT=700±50
Fast idle speed - MT/AT rpm1000-1800
Oil temperature °C60
CO level at idle speed - tailpipe Vol. % CO1,0±1,0
CO level at idle speed - tailpipe (Cat) Vol. % CO1,0 Max
HC level at idle speed ppm300
HC level at idle - alternative ppmCat=100
CO2 level at idle speed Vol. % CO213-16
O2 level at idle speed Vol. % O20,5-2,0

Starting and charging

Starter motor MakeNippon Denso
Starter motor Type0,8-1,4 kW
Maximum cranking amps A122-149
Alternator Type12V 65A
Alternator output A/V/rpm65/13,5/3500
Regulated voltage V13,9-15,1

Service checks and adjustments

Compression pressure bar10,5-12,5
Oil pressure bar/rpm3,8-4,6/3000
Radiator cap bar0,75-1,05
Thermostat opens °C86-90
Drive belt tension - alternator/PAS/AC mm6-9

Fuel system

Regulated pressure with vacuum bar2,35-2,75
Engine coolant temperature (ECT) sensor Ohm/°C220-350/80
Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm650-850
Injector Ohm1,5-2,5

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Honda Accord Aerodeck 2.0 (1986–1990) are tightened in 2 stages: 30 Nm, then a final 68 Nm.

Cylinder head
Renew boltsNo
Tighten30 Nm
Tighten68 Nm
Cylinder head instructions—
Other engine tightening torques
Main bearings Renew bolts/nutsNo
Main bearings Stage 134 Nm
Main bearings Stage 268 Nm
Big end bearings Renew bolts/nutsNo
Big end bearings Stage 116 Nm
Big end bearings Stage 232 Nm
Oil pump to cylinder block12 Nm
Sump bolts1)5 Nm 2)10 Nm
Sump drain bolt45 Nm
Flywheel/driveplate105 Nm/75 Nm
Clutch pressure plate26 Nm
Crankshaft pulley/damper centre bolt115 Nm
Camshaft sprocket/gear38 Nm
Camshaft carrier/cap—
Camshaft carrier caps
Camshaft/rocker cover10 Nm
Inlet manifold to cylinder head22 Nm
Exhaust manifold to cylinder head32 Nm
Spark plugs18 Nm
Chassis tightening torques
Front hub185 Nm
Rear hub185 Nm
Steering track rod end44 Nm
Brake caliper to carrier Front45 Nm
Brake caliper/carrier to hub Front78 Nm
Back plate to hub Rear39 Nm
ABS sensor Front22 Nm
ABS sensor Rear22 Nm
Road wheels110 Nm

Air conditioning

Air conditioning refrigerant TypeR12
Air conditioning refrigerant quantity grams900±25
Air conditioning oil quantity cm³105±15

Frequently asked questions

What is the firing order of the Honda Accord Aerodeck 2.0?

The firing order for the Honda Accord Aerodeck 2.0 (1986–1990) is 1-3-4-2.

What spark plugs does the Honda Accord Aerodeck 2.0 use?

The Honda Accord Aerodeck 2.0 (1986–1990) uses NGK BPR6EY-11 spark plugs with a 1,1 mm electrode gap.

How much oil does the Honda Accord Aerodeck 2.0 take?

The Honda Accord Aerodeck 2.0 (1986–1990) takes 3.5 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 Accord Aerodeck 2.0?

Valve clearances for the Honda Accord Aerodeck 2.0 (1986–1990) are 0,12-0,17 mm inlet and 0,25-0,30 mm exhaust, measured cold.

What is the cylinder head torque for the Honda Accord Aerodeck 2.0?

The cylinder head bolts on the Honda Accord Aerodeck 2.0 (1986–1990) are tightened in 2 stages: 30 Nm, then a final 68 Nm.

What is the ignition timing for the Honda Accord Aerodeck 2.0?

Basic ignition timing for the Honda Accord Aerodeck 2.0 (1986–1990) is 15° BTDC at 750 rpm.

More on the Accord Aerodeck