| Schematic Diagram |

| 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 the PCV valve and make sure that intake manifold vacuum can be felt.
|
| 4. |
If the vacuum is not felt inspect PCV operation, if operating correctly clean or replace the vapor hose. |
| Operation Principle |

| 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.
|
| Installation |
| 1. |
Installation is reverse of removal.
|
Hyundai Elantra AD (2016-2020) Service Manual: Components and Components Location
Component Location
1. Head lamp (Low)2. Head lamp (High)3. Head lamp (Low - HID)4. Fog lamp / Daytime Running Light (DRL)5. Position lamp / Turn signal lamp6. Side marker7. Turn signal lamp (Door mirror)8. Vanity lamp9. Map lamp
1. Tail lamp2. Stop lamp3. Back up lamp4. Turn signal lamp5. ...
Hyundai Elantra AD (2016-2020) Service Manual: Fuel Filter Repair procedures
Removal
1.
Remove the fuel pump.
(Refer to Fuel Delivery System - "Fuel Pump")
2.
Disconnect the electric pump wiring connector (A) and the fuel sender connector (B).
3.
Remove the head assembly (A) after releasing the cushion fixing hooks.
4.
Disconnect the fuel tube quick-connect ...