Kia Optima Hybrid: Evaporative Emission Control System / Canister Repair procedures

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Emission Control System / Evaporative Emission Control System / Canister Repair procedures

Removal

1.	Turn the ignition switch OFF and disconnect the auxiliary battery 12 (V) negative (-) terminal.

2.	Lift the vehicle.

3.	Remove the rear muffler hanger (A).

4.	Remove the rear suspension damper (A).

5.	Disconnect the vapor tube quick connectors (A) and ventilation hoses (B).

6.	Separate the canister from auxiliary canister by loosening the canister mounting bracket mounting bolts (A).

7.	Remove the canister bracket mounting bolts (B).

8.	Remove the canister protector (C).

9.	Remove the canister (A) by loosening the canister bracket mounting bolts (B).

10.	Remove the auxiliary canister (A) by removing the nuts (B) and disconnecting the ventilation hoses (C).

Inspection

1.	Check for the following items visually. - Cracks or leakage of the canister - Loose connection, distortion, or damage of the vapor hose/tube A: Canister - Atmosphere (NVLD module and Fuel Tank Air Filter) B: Canister - Intake Manifold (PCSV) C: Canister - Fuel Tank

Installation

Installation is the reverse of removal.

Canister installation bolt:

3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)

Canister poretector installation bolt:

8.8 ~ 13.7 N.m (0.9 ~ 1.4 kgf.m, 6.5 ~ 10.1 lb-ft)

Auxiliary canister installation bolt:

3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)

Repair procedures

Inspection When the engine is shut off, the pressure change in the fuel tank by the ambient temperature is monitored by NVLD and when the engine is started, ECM judges whether there is a leak or not through ...

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