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Toyota 1981 2F User Manual

Toyota 1981 2F
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Toyota 1981 2F Specifications

General IconGeneral
BrandToyota
Model1981 2F
CategoryEngine
LanguageEnglish

Summary

Introduction

General Precautions

General safety and procedural guidelines for performing repairs and maintenance.

Precautions for Vehicles Equipped with a Catalyst

Specific safety measures and warnings for vehicles fitted with a catalytic converter.

Abbreviations Used in this Manual

Glossary of abbreviations and acronyms used throughout the repair manual.

Troubleshooting

Engine Overheating

Identifies causes and remedies for engine overheating issues.

Hard Starting

Addresses problems related to the engine failing to start or cranking slowly.

Rough Idling

Covers symptoms and solutions for engines running roughly or stalling at idle.

Engine Hesitates/Poor Acceleration

Details causes and fixes for engine hesitation and sluggish acceleration.

Engine Dieseling

Explains engine dieseling (run-on) after the ignition is switched off.

After Fire, Backfire

Discusses issues related to engine backfires and muffler explosions.

Excessive Oil Consumption

Outlines common reasons for high engine oil consumption.

Poor Gasoline Mileage

Provides troubleshooting steps for reduced fuel efficiency.

Emission Control System

System Purpose

Explains the function and purpose of various emission control systems.

Component Layout and Schematic Drawing

Visual representation of emission control system components and their interconnections.

Positive Crankcase Ventilation (PCV) System

Details the PCV system for reducing crankcase blow-by gas emissions.

Fuel Evaporative Emission Control (EVAP) System

Describes the EVAP system for controlling fuel vapor emissions.

Spark Control (SC) System

Explains the SC system for managing ignition timing to reduce emissions.

Exhaust Gas Recirculation (EGR) System

Covers the EGR system for recirculating exhaust gas to lower combustion temperature.

Air Injection (AI) System

Details the AI system for injecting air to oxidize exhaust gases.

Oxidation Catalyst (OC) System

Explains the function and inspection of the oxidation catalyst.

High Altitude Compensation (HAC) System

Describes the HAC system for adjusting air-fuel mixture at high altitudes.

Automatic Hot Air Intake (HAI) System

Manages air intake temperature for improved cold-weather driveability.

Hot Idle Compensation (HIC) System

Adjusts air-fuel mixture during high temperatures at idle.

Choke Breaker (CB) System

Opens the choke valve slightly after starting to prevent rich mixtures.

Choke Opener System

Holds the choke valve open after warm-up to prevent rich mixtures.

Deceleration Fuel Cut System

Cuts fuel during deceleration to prevent overheating and afterburning.

Heat Control Valve

Heats the intake manifold for better fuel vaporization and driveability.

Engine Adjustment

Ignition Timing

Procedures for inspecting and adjusting ignition timing.

Idle Speed

Steps for inspecting and adjusting the engine's idle speed.

Fast Idle Speed

Instructions for adjusting the fast idle speed setting.

Idle HC/CO Concentration Check Method

Method for checking and verifying idle HC/CO concentrations.

Idle Mixture

Procedures for adjusting the idle mixture screw and related components.

Specifications

Engine

Technical specifications for the 2F engine model.

Maintenance and Tune-Up

Key maintenance intervals and tune-up specifications.

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