Evaporative Emission Control System: Diagnosis Kia Forte I

Inspection

[System Inspection]

1. Disconnect the vapor hose from the throttle body and connect a vacuum pump to the nipple on the throttle body.
2. Check the following points with applied vacuum using a vacuum pump. At Cold Engine [Engine Coolant Temperature < 60°C (140°F)] ENGINE OPERATING CONDITION CHART Engine Operating Condition Applied Vacuum Result Idle 0.5kgf/cm 2 (50kPa, 7.3psi) Vacuum is held 3,000rpm At Warmed Engine [Engine Coolant Temperature > 80°C (176°F)] ENGINE OPERATING CONDITION CHART Engine Operating Condition Applied Vacuum Result Idle 0.5kgf/cm 2 (50kPa,7.3 psi) Vacuum is held Within 3 minutes after engine start at 3,000 RPM Try to apply vacuum Vacuum is released In 3 minutes after engine start at 3,000 RPM 0.5kgf/cm 2 (50kPa,7.3psi) Vacuum will be held momentarily, after which, it will be released

[PCSV Inspection]

Scheme 17

1. Turn ignition switch OFF and disconnect the negative (-) battery cable.
2. Disconnect the PCSV connector (A).
3. Disconnect the vapor hose (B) which is connected to the intake manifold from the PCSV.
4. After connecting a vacuum pump to the nipple, apply vacuum.
5. With the PCSV control line grounded, check the valve operation with battery voltage applied to the PCSV (Open) and removed (Closed). BATTERY VOLTAGE SPECIFICATION Battery Voltage Valve Vacuum Connected Open Released Disconnected Close Maintained
6. Measure the coil resistance of the PCSV. Specifications: 19.0 ~ 22.0ohms [20°C (68°F)]

[Evap. Leakage Test]

Scheme 18

Scheme 19

1. Select "Evap. Leakage Test".
2. Proceed with the test according to the screen introductions.

Scheme 20

Scheme 21

Scheme 22

1. Turn the ignition switch OFF and disconnected the negative (-) battery cable.
2. Disconnect the canister close valve connector (A).
3. Disconnect the ventilation hose (B) from the fuel tank air filter.
4. Disconnect the vapor tube quick-connector (A) and the vapor hose (B) from the canister.
5. Remove the mounting bolts (A) and nut (B), and then remove the canister from the vehicle.

Scheme 23

Scheme 24

1. Check for the following items visually. Cracks or leakage of the canister Loose connection, distortion, or damage of the vapor hose/tube [SULEV] [ULEV] To Fuel Tank Air Filter To Intake Manifold To Fuel Tank