Hyundai Sonata: Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Emission Control System / Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve Repair procedures

Removal
1.
Disconnect the PCV 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 moves.

   
If the plunger does not move (PCV valve is clogged), clean or replace the valve.
Installation
1.
Install in the reverse order of removal.

PCV Valve installation:
7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)

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

Evaporative Emission Control System
...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Checking the Engine Coolant Level
WARNING Never remove the radiator cap or the drain plug while the engine and radiator are hot. Hot coolant and steam may blow out under pressure, causing serious injury. Turn the engine off and wait until the engine cools down. Use extreme care when removing the radiator cap. Wrap a thick towel ...

Hyundai Sonata LF 2014-2019 Owners Manual: Notes on the safe use of the Tire Mobility Kit
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