Kia Carens. Manual — part 58

Engine Mechanical System

Intake And Exhaust System - Air Cleaner

Engine Mechanical System

2001 > 1.8L DOHC >

INSPECTION

1. Loosen air intake hose clamp at the mass air flow sensor.

2. Disconnect air hose from mass air flow sensor.

3. Remove six screws retaining air cleaner housing and lift housing unit.

4. Remove air cleaner from beneath air cleaner housing.

Do not use compressed air to clean the air cleaner element.

5. Inspect air cleaner elemenr for excessive dirt, damage, or oil.

6. Replace the cleaner element if necessary.

Air cleaner element

1. Check the air cleaner element for excessive dirt, damage or oil replace or clean if necessary.

Use a compressed air to clean the element from the internal side to the external side, or from the upper
to the lower.

Installation

1. Lift the air cleaner housing unit and install the air cleaner beneath the housing unit.

2. Lower the housing unit and replace sic retaining screws to hold the unit in place.

3. Reattach air intake hose to mass air flow sensor and tighten retaining clamp.

2001 > 1.8L DOHC >

DESCRIPTION AND OPERATION

Intake system

The air induction system supplies filtered air to the engine to mix with the fuel for combustion. If contsists of :

• Air cleaner assembly
• Resonance chamber
• Mass air flow sensor
• Throttle body
• Intake manifold
• Idle air control (IAC) valve

Throttle position (TP) sensor
Idle air control (IAC) valve

Exhaust system

The engine exhaust consists mainly of nitrogen(N

₂), however, it also contains Carbon Monoxide (CO), Carbon

Dioxide (CO

₂), Water Vapor (H₂O), Oxygen (O₂), Nitrogen Oxides(NOx), and Hydrogen (H₂) as well as

various, Unburned Hydrocarbons (HC). Three of these exhaust components - CO, NOx, and HC - are major air
pollutants, so their emission to the atmosphere must be controlled.
The three-way catalytic (TWC) converter, mounted in the engine system, works as a gas reactor to contert and
reduce the pollutant levels to whin legally prescribed limits.
The catalytst metals are thin coated onto and supproted by a honeycomb shaped high temperature ceramic,
mounted inside the converter, mounted in the engine system, works as a gas reactor to convert and reduce the
pollutant levels to within legally prescribed linits.
The catalyst metals are thin coated onto and supported by a honeycomb shaped high temperature ceramic,
mounted inside the converter shell. The result is a highly effective converter shell. The result is a highly
effective converter design hacing minimum restrication to exhaust gas flow and good durbility

Do not touch the catalytic converter heat shidle when the engine is running. The conversion process
produces high heat. Even when the engine is not running it remains hot a long timw. It will remain hot after
other pipes have cooled. Touching the heat shield may produce a serious burn.