Hyundai Sonata LF: Emission Control System / Crankcase Emission Control System
Schematic Diagrams
Repair procedures
| 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. |
Positive Crankcase Ventilation (PCV) Valve Description and Operation
Positive Crankcase Ventilation (PCV) Valve Repair procedures
| 1. |
Disconnect the PCV hose (A). |
| 2. |
Remove the PCV valve (B). 
|
| 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.
|
|
| 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)
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Description and Operation
Description
Emissions Control System consists of three major systems.
•
Crankcase Emission Control System prevents blow-by gas from
releasing into the atmosphere...
Other information:
C..
Replacement
1.
Loosen the front door checker (B) mounting bolt.
2.
Detach the clips, then remove the front door side weatherstrip (A).
Tightening torque :
16.7 ~ 21.6 N.m (1.7 ~ 2.2 kgf.m, 12.3 ~ 15.9 lb-ft)
3.
Install in the reverse order of removal...
General Information
