Air intake

Air intake includes all elements of the injection system of gasoline engines that participate in the implementation, measurement and regulation of air supply to the engine. Air is introduced in the engine from the environment to form a mixture and burn fuel.
The primary components of the automotive intake system are the air filter, the intake manifold, the throttle valve, the bypass line and the EGR valve for returning part of the exhaust gas to the intake line.

In this topic, you will learn about the procedures for checking, testing and repairing the elements responsible for air intake.

Engine air filter check

An engine air filter check is performed periodically between two replacement intervals, especially if the vehicle is used on dusty roads. Read more

Intake manifold testing

When it is suspected that air is leaking or entering through the intake manifold crack, testing the intake manifold is done in three ways. Read more

Throttle valve check

Checking the condition of the throttle valve is very rare. Sometimes the cause of engine idling problems can be the throttle valve itself. Read more

Throttle valve sensor test

The most common symptoms of a bad or misaligned sensor are engine stalling, incorrect idle speed, and hesitation during acceleration. Read more

Idle air control valve test

When the engine has a high or low idle speed or shuts down, the cause may be the control valve and an idle air control valve test should be performed. Read more

Accelerator-pedal module test

Accelerator-pedal module test is a procedure that determines the correctness of the Electronic throttle control (ETC) in the electronic engine power control system. Read more