Kia Optima Hybrid: Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve Description and Operation

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Emission Control System / Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve Description and Operation

Operation Principle

Repair procedures

Inspection 1. After disconnecting the vapor hose from the PCV valve, remove the PCV valve. 2. Reconnect the PCV valve to the vapor hose. 3. Run the engine at idle, then put a finger over the open end of ...

Positive Crankcase Ventilation (PCV) Valve Repair procedures

Removal 1. Disconnect the vapor hose (A). 2. Remove the PCV valve (B). Inspection 1. Insert a thin stick (A) into the PCV valve (B) from the threaded side to check that the plunger movement.     ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Balance Shaft & Oil Pump Repair procedures


Removal Balance Shaft Module (BSM) Chain System 1. Remove the timing chain. (Refer to Timing system in this group) 2. Install a stopper pin (A) after compressing the balance shaft chain tensioner. 3. Remove the balance shaft chain hydraulic tensioner (B). 4. Remove the balance shaft chain tensioner arm ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Timing Chain Repair procedures


Removal     • Use fender covers to avoid damaging painted surfaces. • To avoid damage, unplug the wiring connectors carefully while holding the connector portion.     Mark all wiring and hoses to avoid misconnection.     • Be sure to read and follow the “General ...

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