Purpose, Function
Conducts fresh air from outside the engine compartment.
Increases air density by taking fresh air, which is cooler than the engine compartment, to enhance the charging efficiency, ensuring the combustion stability.
Construction
The fresh-air duct is installed to the air cleaner.

Engine
Hydraulic Variable Valve Timing Actuator InspectionExpansion Valve
Purpose
The expansion valve atomizes liquid refrigerant to facilitate cooling of
the evaporator.
Function
The expansion valve reduces the pressure of liquid refrigerant rapidly to
facilitate vaporization of the atomized refrigerant at the evaporator, and adjusts
the refr ...
Rear Crossmember Removal/Installation [Awd]
WARNING:
Verify that the crossmember is securely supported by a jack. If the rear
crossmember falls off, it can cause serious injury or death, and damage to the
vehicle.
CAUTION:
Performing the following procedures without first removing the rear ABS wheel-speed
sensor ...
Exhaust Manifold
Purpose, Function
By lengthening the exhaust passage, the transmission of exhaust pressure
waves to other cylinders can be delayed, and the amount of gas exhausted from
a cylinder and forced back inside the combustion chamber is reduced By reducing
the residual gas, the temperature i ...