Hyundai Elantra: Exhaust Emission Control System / Catalytic Converter
Hyundai Elantra (CN7) 2021-2025 Service Manual / Emission Control System / Exhaust Emission Control System / Catalytic Converter
Description and operation
| Description |
The catalytic converter of the gasoline engine is a three way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from the oxides of nitrogen (NOx).
Repair procedures
| Removal |
[Catalytic Converter (WCC)]
| 1. | Remove the exhaust manifold. (Refer to Engine Mechanical System - "Exhaust Manifold") |
[Catalytic Converter (UCC)]
| 1. | Remove the Center Muffler. (Refer to Engine Mechanical System - "Center Muffler") |
| Installation |
| 1. | Install in the reverse order of removal. |
Description and operation
DescriptionExhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components.Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system...
CVVT (Continuous Variable Valve Timing) System
Description and operation
DescriptionContinuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load...
Other information:
Hyundai Elantra (CN7) 2021-2025 Service Manual: Specifications
Specifications Items Specification HoodTypeFront openine type, rear hinged, stay rod typeFront DoorConstructionFront hinged, frame door constructionRegulator systemWire drum typeLocking systemPin - fork systemRear DoorConstructionFront hinged, frame door constructionRegulator systemWire drum typeLocking systemPin - fork systemTrunk LidTypeTorsio..
Hyundai Elantra (CN7) 2021-2025 Service Manual: Oil Pump
Repair procedures Removal and InstallationOil Pump1.Remove the engine room under cover.(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")2.Drain the engine oil.(Refer to Lubrication System - "Engine Oil")3.Remove the oil pan.(Refer to Lubrication System - "Oil Pan")4.Turn the oil pump chain tensioner (A) in the direction of the arrow and remove the oil pump chain (B) from the ..
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Tire Rotation
To equalize tread wear, HYUNDAI recommends that the tires be rotated according to the maintenance schedule or sooner if irregular wear develops.
During rotation, check the tires for correct balance.
When rotating tires, check for uneven wear and damage. Abnormal wear is usually caused by incorrect tire pressure, improper wheel alignment, out-ofbalance wheels, severe braking or severe cornering. Look for bumps or bulges in the tread or side of the tire. Replace the tire if you find any of these conditions. Replace the tire if fabric or cord is visible. After rotation, be sure to bring the front and rear tire pressures to specification and check lug nut tightness (proper torque is 79~94 lbf·ft [11~13 kgf·m]).
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