Hyundai Sonata: Crankcase Emission Control System / 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.
Inspect the PCV vlave operation.
(1)
Run the engine at idle.
(2)
Put a finger on the open end of the PCV valve.
(3)
Make sure that intake manifold vaccum can be felt.
   
The plunger inside the PCV valve will move back and forth at vacuum.

4.
If the vacuum is not felt, clean or replace the vapor hose.
Schematic Diagrams
Schematic Diagram ...

Positive Crankcase Ventilation (PCV) Valve Description and Operation
Operation Principle ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Canister Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the fuel tank. (Refer to Engine Control / Fuel System - " Fuel Tank") 3. Disconnect the vent hose (A). 4. Disconnect the vapor tube quick-connector (B,C). 5. Remove installation ...

Hyundai Sonata LF 2014-2019 Service Manual: CVVT & Camshaft Repair procedures
Removal 1. Remove the cylinder head cover. (Refer to Cylinder Head Assembly - "Cylinder Head Cover") 2. Turn the crankshaft damper pulley so that No. 1 piston is at top dead center. (1) Turn the crankshaft damper pulley and align its groove with the timing mark on the timing chain cove ...

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