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Evaporative Emission Control System: Overview Kia Carnival III

Testing & Diagnostics 3 illustrations ~169 words

Description

The Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere. When the fuel evaporates in the fuel tank, the vapor passes through vent hoses or tubes to a canister filled with charcoal. The canister temporarily holds the vapor in the charcoal. The ECM will control the system in order to draw the gathered vapor into the combustion chambers during certain operating conditions. Engine manifold vacuum is used to draw the vapor into intake manifold.

Scheme 10

Scheme 10: Schematic Diagram

A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which seals the fuel filler. After the gasket on the fuel filler cap and the filler neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set.

Scheme 11

Scheme 11: Description

Scheme 12

Scheme 12: Removal
  1. Remove the rear left wheel house inner cover.
  2. Disconnect the vacuum hose (A).
  3. Remove the fuel tank air filter (B) after removing the mounting bolt (C).