Hyundai Elantra: Cylinder Head Assembly / Cylinder Head Cover 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.
1.
Remove the engine cover.
(Refer to Engine And Transaxle Assembly - "Engine Cover")
2.
Disconnect the battery negative terminal.
3.
Disconnect the wiring connectors and harness clamps and remove the connector brackets around the cylinder head cover.

4.
Remove the air duct and air cleaner assembly.
(Refer to Intake And Exhasut System - "Air Cleaner")
5.
Remove the ignition coils.
(Refer to Engine Electrical System - “Ignition Coil”)
6.
Remove the engine oil level gauge.
(Refer to Lubrication System - “Oil Level Gauge & Pipe”)
7.
Disconnect the positive crankcase ventilation (PCV) hose (A).

8.
Remove the cylinder head cover (A).

   
Unfasten the bolts in the sequence as shown.

Installation
1.
Install cylinder head cover.
(1)
The hardening sealant located on the cylinder head cover and the gap between the timing chain cover and the cam carrier should be removed before assembling cylinder head cover.
(2)
Apply engine oil on the lip portion of the oil seal on the cover and outer surface of the spark plug pipes.
(3)
After applying sealant on the gap between the timing chain cover and the cam carrier, it should be assembled within 5 minutes.

Bead width : 2.0 ~ 3.0 mm (0.08 ~ 0.12 in.)
Sealant : Threebond 1217H or equivalent

(4)
Install the cylinder head cover by tightening the bolts, in several passes, in the sequence as shown.

Tightening torque
1st step:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)
2nd step:
7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

   
Do not reuse cylinder head cover gasket.
Before installing the cylinder head cover, make sure the cylinder head cover gasket is not separated from the cylinder head cover gasket groove.
The engine running or pressure test should not be performed within 30 minutes after the cylinder head cover was assembled.
2.
Install the other parts reverse order of removal.
Cylinder Head Cover Components and Components Location
Components 1. Cylinder head cover2. Cylinder head cover gasket ...

CVVT & Camshaft Components and Components Location
Components 1. Camshaft bearing cap2. Camshaft front bearing cap3. Exhaust camshaft4. Intake camshaft5. Exhaust CVVT assembly6. Intake CVVT assembly ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Parking Assist Sensor Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the front / rear bumper cover. (Refer to Body - "Front Bumper Cover") (Refer to Body - "Rear Bumper Cover") 3. Disconnect the connector (B) from the parking assist sensor (A). 4. Remove the sensor (A) by pulling out ...

Hyundai Elantra AD (2016-2020) Owners Manual: Limitations of the system
The driver must be cautious in the below situations because the system may not detect other vehicles or objects in certain circumstances: The vehicle is driven in inclement weather such as heavy rain or snow. The sensor is polluted with rain, snow, mud, etc. The rear bumper where the senso ...

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