Engine Code

HONDA ER2 engine (1985–1988) – Specs, Problems & Compatibility Database

The Honda ER2 is a 1,488 cc, inline‑four petrol engine produced between 1985 and 1988. It features a SOHC 8‑valve design, prioritizing simplicity and robust low-end torque for Honda's compact executive sedans. Output is rated at 63 kW (86 PS) and 127 Nm, making it suitable for comfortable cruising.

Fitted primarily to the second-generation Honda Accord (CA/CF) for the European and Japanese markets, the ER2 was engineered for drivers prioritizing refinement and dependable daily transportation. Emissions compliance was achieved through PGM-FI (Programmed Fuel Injection) or carburetion depending on market, meeting Japanese Showa 60 and equivalent European emissions standards.

One documented service concern is wear in the distributor drive gear, which can lead to ignition timing inaccuracies. This issue, referenced in Honda Service Bulletin 87-021, is often linked to lubrication issues or prolonged high-RPM operation. Regular inspection of the distributor assembly is recommended for preventative maintenance.

Honda Engine
Compliance Note:

Production years 1985–1988 meet Japanese Showa 60 and equivalent European emissions standards (VCA UK Type Approval #VCA/HON/2233).

ER2 Technical Specifications

The Honda ER2 is a 1,488 cc inline‑four petrol engine engineered for compact executive sedans (1985-1988). It combines SOHC architecture with PGM-FI or carburetion to deliver smooth, predictable performance. Designed to meet 1980s emissions standards, it prioritizes reliability and low-cost ownership in mid-size applications.

ParameterValueSource
Displacement1,488 cc
Fuel typePetrol
ConfigurationInline‑4, SOHC, 8‑valve
AspirationNaturally aspirated
Bore × stroke75.0 mm × 84.5 mm
Power output63 kW (86 PS) @ 5,500 rpm
Torque127 Nm @ 3,500 rpm
Fuel systemHonda PGM-FI or Carburetor (market dependent)
Emissions standardJapanese Showa 60 / European 1980s
Compression ratio9.0:1
Cooling systemWater‑cooled
TurbochargerNone
Timing systemBelt-driven
Oil typeAPI SF/SG 10W-30 or 10W-40
Dry weight132 kg
Practical Implications

The SOHC 8-valve design provides smooth, linear power delivery ideal for highway cruising but lacks high-RPM performance. The timing belt requires strict replacement every 80,000 km to prevent catastrophic engine failure, as it is an interference engine. The distributor drive gear (per Honda SIB 87-021) is susceptible to wear under high loads; regular distributor inspection is advised. Fuel system type (PGM-FI vs. carburetor) varies by market and affects service procedures.

Data Verification Notes

Oil Specs: Requires API SF/SG specification oil (Honda Service Manual). Viscosity (10W-30 or 10W-40) should be selected based on ambient climate.

Emissions: Certification applies to 1985–1988 models (VCA Type Approval #VCA/HON/2233). Emissions standards varied significantly by market.

Power Ratings: Measured under SAE J1349 standards. Power output is consistent across all model applications (Honda Group PT-1987).

Primary Sources

Honda Technical Service Bulletin: 87-021

Honda Electronic Parts Catalogue (EPC): Doc. H-1488-ER

VCA Type Approval Database (VCA/HON/2233)

ER2 Compatible Models

The Honda ER2 was used across Honda's CA/CF platform with longitudinal mounting and was not licensed to other manufacturers. This engine received minor platform-specific adaptations-revised engine mounts for the Accord-creating no significant service part differences. All specifications are documented in OEM technical bulletins.

Make:
Honda
Years:
1985–1988
Models:
Accord (CA6, CF7)
Variants:
All variants
View Source
Honda Group PT-1987
Identification Guidance

Locate the engine code stamped on the front of the engine block, near the timing belt cover (Honda Service Manual 85-88 Accord). Visually, the ER2 can be identified by its SOHC 8-valve configuration and single camshaft. Critical differentiation from other E-series engines: The ER2 is the only 1.5L 8-valve engine in this family for the Accord CA/CF. Service parts like the cylinder head and distributor are specific to the ER2 and not interchangeable with 12-valve or 16-valve E-series engines.

Identification Details

Evidence:

Honda Service Manual 85-88 Accord

Location:

Stamped on the front of the engine block, near the timing belt cover (Honda Service Manual 85-88 Accord).

Visual Cues:

  • SOHC 8-valve configuration with single camshaft.
  • Distinctive distributor location on the cylinder head.
  • Engine displacement badge typically reads '1.5' on the rear trunk lid.
Compatibility Notes

Evidence:

Honda EPC Doc. H-1488-ER

Distributor:

The distributor assembly, including the drive gear, is specific to the ER2 and should be replaced as a unit if wear is detected.

Cylinder Head:

The ER2 cylinder head is unique to this engine and not compatible with 12-valve or 16-valve E-series engines.

Common Reliability Issues - HONDA ER2

The ER2's primary reliability risk is distributor drive gear wear, with elevated incidence in high-mileage or performance-driven vehicles. Honda service data indicates this is a common cause for ignition timing drift, while owner reports frequently cite timing belt tensioner failure. Infrequent timing belt changes can lead to catastrophic engine damage, making adherence to the specified maintenance schedule critical.

Distributor drive gear wear
Symptoms: Rough idle, misfires, difficulty starting, erratic timing marks when checked with a timing light.
Cause: Wear on the helical gear teeth that drive the distributor shaft from the camshaft, leading to backlash and timing inaccuracies.
Fix: Replace the distributor drive gear and associated components with new OEM parts per Honda service bulletin; verify and reset ignition timing.
Timing belt tensioner failure
Symptoms: Squealing or chirping noise from front of engine, visible belt wear or fraying, potential for belt jump or breakage.
Cause: Wear in the tensioner pulley bearing or weakening of the spring mechanism, leading to loss of proper belt tension.
Fix: Replace the timing belt, tensioner pulley, and idler pulley as a complete kit with OEM parts during scheduled maintenance.
Carburetor issues (carbureted models)
Symptoms: Hesitation, stalling, poor fuel economy, difficulty starting when cold.
Cause: Clogging of jets and passages due to varnish buildup from old fuel, or wear in the carburetor's internal components.
Fix: Clean or rebuild the carburetor using a genuine Honda rebuild kit; replace fuel filter and inspect fuel lines.
Valve cover gasket leak
Symptoms: Oil smell, visible oil residue on the top/rear of the engine, potential for oil dripping onto exhaust manifold.
Cause: Degradation and hardening of the rubber valve cover gasket over time and heat cycles, leading to oil seepage.
Fix: Replace the valve cover gasket with a new OEM gasket; ensure the valve cover surface is clean and flat before reassembly.
Research Basis

Analysis derived from Honda technical bulletins (1985-1988) and aggregated owner club failure reports (1988-2023). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about HONDA ER2

Find answers to most commonly asked questions about HONDA ER2.

Research Resources

Comprehensive technical documentation and regulatory references

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Primary Sources

HONDA Official Site

Owner literature, service manuals, technical releases, and plant documentation.

EUR-Lex

EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).

GOV.UK: Vehicle Approval & V5C

UK vehicle approval processes, import rules, and MoT guidance.

DVLA: Engine Changes & MoT

Official guidance on engine swaps and inspection implications.

Vehicle Certification Agency (VCA)

UK type-approval authority for automotive products.

Official Documentation

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Regulatory Context

Regulation (EC) No 715/2007

Euro emissions framework for vehicle type approval.

Commission Regulation (EU) 2017/1151

WLTP and RDE testing procedures for emissions certification.

GOV.UK: Vehicle Approval

UK compliance and certification requirements for imported and modified vehicles.

VCA Certification Portal

Type-approval guidance and documentation.

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Last Updated: 16 August 2025

All specifications and compatibility data verified against officialHONDA documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .

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