Technician A says that CO and HC levels should increase if the AIR hoses are pinched off. Technician B says that a defective drive belt may cause AIR system problems. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

Question

Quizplus · Accepted Answer

The AIR (Air Injection Reactor) system is designed to reduce emissions by injecting air into the exhaust stream to help burn off hydrocarbons (HC) and carbon monoxide (CO). If the AIR hoses are pinched off, it would restrict the flow of air into the exhaust, leading to increased levels of CO and HC due to incomplete combustion. A defective drive belt can lead to AIR system problems if the belt drives the air pump, as a malfunctioning pump would not inject air properly, also leading to increased emissions.

Technician a Says That CO and HC Levels Should Increase