General information about the carburetor system (Honda Accord 3)

On these engines, the engine management system is considered part of the emission control system. The major components include the carburetors, feedback control system, air intake system, throttle control system and EGR system. The heart of the engine and emission controls is the carburetor and the electronic air control valve (EACV). Other parts of the system are sensors and switches that provide information to the on-board computer, which in turn opens and closes several solenoids and the EACV to maintain the ideal air-fuel ratio in the air-fuel mixture at all engine operating conditions. The catalytic converter used on carbureted engines is identical to that used on fuel-injected engines.

When servicing and repairing the engine management system, it is very important to know when and under what conditions the problem occurs. At high speed? At idle? Only under high load or at high acceleration? In wet weather? After receiving answers to a detailed survey, you will roughly determine the damaged system. Clarity and certainty in the formulation of the malfunction will help to exclude from inspection, as serviceable, many systems and, conversely, quickly identify the faulty one. Before deciding that the electronics are faulty, make sure that all vacuum hoses are intact and electrical contacts are not rusted or shorted by abandoned tools. Very often, simply by connecting and disconnecting, rust is knocked off the contact and the operation of the device is restored. Do not forget to check everything properly, especially if the car has undergone several major repairs.

[The text was taken from the website: HondaBook]