Kia Optima: Troubleshooting - General Information - Emission Control System - Kia Optima TF 2011-2025 Service ManualKia Optima: Troubleshooting

Troubleshooting

Symptom
Suspect area
Engine will not start or struggle to start
Vapor hose damaged or disconnected
Engine struggles to start
Malfunction of the Purge Control Solenoid Valve
Rough idle or engine stalls
Vapor hose damaged or disconnected
Malfunction of the PCV valve
Rough idle
Malfunction of the Evaporative Emission Control System
Excessive oil consumption
Positive crankcase ventilation line clogged

Tightening Torques
Item kgf.m N.m lb-ft Positive crankcase ventilation valve installation 0.19 ~ 0.29 1.9 ~ 2.8 1.4 ~ 2.1 ...

Schematic Diagrams
Schematic Diagram ...

See also:

Replacement
When the receiver first arrives for replacement: 1) It will be in Virgin State. 2) It wi ...

Checking the Engine Oil Level
1. Be sure the vehicle is on level ground. 2. Start the engine and allow it to reach normal operating temperature. 3. Turn the engine off and wait a few minutes for the oil to return to the oil pan. ...

Schematic Diagrams
Circuit Diagram ...

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