Hyundai Elantra: Emission Control System / Troubleshooting
Hyundai Elantra (CN7) 2021-2025 Service Manual / Emission Control System / Troubleshooting
| Troubleshooting |
|
Symptom
|
Suspect Area
|
| Engine will not start or stuggle to start | Vapor hose damaged or disconnected |
| Engine stuggle to start | Malfunction of the Purge Control Solenoid Valve |
| Rough idle or engine stalls | Vapor hose damaged or disconnected |
| Malfunction of the PCV valve | |
| Rough idle | Malfunction of the Evaporative Emission Control System |
| Excessive oil consumption | Positive crankcase ventilation line clogged |
Components and components location
Components Location1. Canister2. Purge control solenoid valve (PCSV)3. Fuel Tank Air Filter4. Catalytic converter (WCC)5. Catalytic converter (UCC)1. Canister 2...
Specifications
SpecificationsPurge Control Solenoid Valve (PCSV)▷ Specification
Item
Specification
Coil Resistance (Ω)22...
Other information:
Hyundai Elantra (CN7) 2021-2025 Service Manual: Battery
Description and operation Description1.The CMF (Closed Maintenance Free) battery is, as the name implies, totally maintenance free and has no removable battery cell caps.2.The MF (Closed Maintenance Free) battery does not require water replenishment for the repair...
Hyundai Elantra (CN7) 2021-2025 Service Manual: Crankshaft
Repair procedures Disassembly • Use fender covers to avoid damaging painted surfaces.• To avoid damage, unplug the wiring connectors carefully while holding the connector portion. • Mark all wiring connector and hoses to avoid misconnection...
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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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