Kia Optima Hybrid: Emission Control System / 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 |
Special Service Tools
Personal Protective Equipment NameIllustrationDescriptionInsulation gloveUsed when inspecting or working on the high voltage components[Insulation performance : 1000V / 300A or above]Insulation shoesUsed ...
Other information:
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Output Speed Sensor Repair procedures
Inspection 1. Check signal waveform of Input & output speed sensor using the GDS. Specification: Refer to "Signal Wave Form" section. Removal • Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure ...
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Exhaust Manifold Repair procedures
Removal and Installation 1. Remove the engine cover. 2. Disconnect the battery negative terminal. Tightening torque: 4.0 ~ 6.0N.m (0.4 ~ 0.6kgf.m, 3.0 ~ 4.4lb-ft) 3. Disconnect the oxygen sensor connectors (A). 4. Remove the front muffler (A). Tightening torque: 39.2 ~ 58.8 N.m (4.0 ~ 6.0 kgf.m, 28.9 ...