General InformationHyundai Elantra AD (2016-2020) Service Manual: Cylinder Head Repair procedures
Removal
Engine removal is not required for this procedure.
•
Use fender covers to avoid damaging painted surfaces.
•
To avoid damaging the cylinder head, wait until the engine
coolant temperature drops below normal temperature (20°C [68°F]) before
removin ...
Hyundai Elantra AD (2016-2020) Service Manual: Electric Thermostat (ECT) Repair procedures
Removal and Installation
•
Disassembly of the thermostat would have an adverse effect,
causing a lowering of cooling efficiency. Do not remove the thermostat,
even if the engine tends to overheat.
Thermostat
1.
Drain engine coolant so its level is below th ...