Emission Control System - 2.0L: Diagnosis Kia Spectra II

INSPECTION

1. Disconnect the vacuum hose from the throttle body, and connect a vacuum pump to the vacuum hose.
2. Check the following points when the engine is cold [engine coolant temperature 60°C (140°F) or below] and when it is warm [engine coolant temperature 80°C (176°F) or higher].

Scheme 258

Scheme 259

Scheme 260

1. Look for loose connections, sharp bends or damage to the fuel vapor lines.
2. Look for distortion, cracks or fuel leakage.
3. After removing the EVAP canister, inspect for cracks or damage.

Note. When disconnecting the vacuum hose, make an identification mark on it so that it can be reconnected to its original position.

Scheme 261

Scheme 262

1. Disconnect the vacuum hose from the solenoid valve.
2. Detach the harness connector.
3. Connect a vacuum pump to the nipple to which the red-striped vacuum hose was connected.
4. Apply vacuum and check when voltage is applied to the PCSV and when the voltage is discontinued.
5. Measure the resistance between the terminals of the solenoid valve. PCSV coil resistance (ohm): 20 - 24 ohm at -20°C (-4°F) 20 - 26 ohm at 0°C (32°F) 20 - 28 ohm at 20°C (68°F) 20 - 29 ohm at 40°C (104°F) 20 - 31 ohm at 60°C (140°F) 20 - 33 ohm at 80°C (176°F)