Hyundai Accent: Emission Control System
Specifications ➤
Description and Operation
• The Crankcase Emission Control System prevents blow-by gas from releasing into the atmosphere. This system recycles gas back into the intake manifold (Closed Crankcase Ventilation Type).
• The Evaporative Emission Control System prevents evaporative gas from releasing into the atmosphere. This system burns gas at appropriate engine operating condition after gathering it in the canister.
• The Exhaust Emission Control System converts the three pollutants [hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx)] into harmless substances by using the 3-way catalytic converter.
Troubleshooting
| Symptom | Suspect area |
| Engine will not start or struggle to start | Vapor hose damaged or disconnected |
| Engine struggles 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 |
Schematic Diagrams
Components and Components Location
1. Canister
2. Purge Control Solenoid Valve (PCSV)
3. Fuel Level Sensor (FLS)
4. Fuel Tank Air Filter
5. Catalytic converter (WCC)
6. Catalytic converter (UCC)
7. Vapor Tube (Canister ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Atmosphere)
| 1. Canister 4. Fuel Tank Air Filter | 2. Purge Control Solenoid Valve (PCSV) |
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| 3. Fuel Level Sensor (FLS) | 5. Catalytic converter (WCC) |
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| 6. Catalytic converter (UCC) | |
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| 7. Vapor Tube (Canister ↔ Intake Manifold) 8. Vapor Hose (Canister ↔ Fuel Tank) 9. Ventilation Hose (Canister ↔ Atmosphere) | |
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Evaporative Emission Control System ➤
Exhaust Emission Control System ➤
Other information:
Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications
- Specifications ItemSpecification Master cylinderTypeSingle Cylinder I.D.20.64 mm Piston stroke36 ± 1 mm (1.41 ± 0.039 in) Fluid level switchProvided Brake boosterType10" Single Boosting ratio8.0 : 1 Front disc brakeTypeVentilated disc Disc O.D.Ø 280 mm (11.02 in) Disc thickness22 mm (0.87 in) Caliper pistonSingle Cylinder I.D.Ø 54.Hyundai Accent (HC) (2017 - 2022) Service Manual: Warning and Caution Labels
- Warning and Caution Labels 1. Radiator cap caution 2. Fan caution 3. Battery caution Attention Srs Vehicle This car is equipped with a supplemental restraint system. To provide continued reliability, certain elements of the supplemental restraint system shall be serviced or replaced by an authorized dealer ten years after vehicle label.
Contents
- Specifications
- Description and Operation
- Troubleshooting
- Schematic Diagrams
- Components and Components Location
- Evaporative Emission Control System
- Exhaust Emission Control System
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